Dr. Matthias Opel

Contact

Room 135

+49 (0) 89 289 - 14237

E-mail

https://opel.userweb.mwn.de/

Assignments

Staff Scientist: Magnetism and Spintronics
Staff Scientist: Thin Film Technology

Staff Scientist: Representative of the Scientific Staff
Staff Scientist: IT Services
Staff Scientist: Data Privacy Coordinator

Elected member of the Speaker Council (Sprecherkollegium) for the scientists of the Bavarian Academy of Sciences and Humanities

IDs

Matthias studied physics at the Technical University of Munich (TUM), Germany. He received his diploma in 1995 with an experimental work on Raman spectroscopy in cuprate superconductors at the Walther-Meissner-Institut (WMI). He continued the investigation of the electronic system and its interactions in both superconducting and antiferromagnetic copper oxide materials and received his PhD in 2000.

For his postdoc, he switched the research topic to multifunctional ferroic oxides and studied epitaxial (anti)ferromagnetic thin films and multilayers. He became a permanent staff member (senior scientist) in 2006. His current research interests include oxide electronics, antiferromagnetic spintronics, and altermagnetism.

In his free time, Matthias enjoys outdoor activities like skiing or hiking.

Since 2015, Matthias is one of the four elected members of the Speaker Council for all scientists of the Bavarian Academy of Sciences and Humanities.

Recent Courses

Advances in Solid State Physics (0000000460)

Proseminar | S 2025

Novel Topics in Magnetism: quantum hybrid systems, spin dynamics, and angular momentum transport (0000003937)

Proseminar | S 2025

Advances in Solid State Physics (0000000476)

Proseminar | W 2024

Novel Topics in Magnetism: quantum hybrid systems, spin dynamics, and angular momentum transport (0000000632)

Proseminar | W 2024

Novel Topics in Magnetism: quantum hybrid systems, spin dynamics, and angular momentum transport (0000003937)

Proseminar | S 2024

Publications of Dr. Matthias Opel

2025

Spin Hall magnetoresistance at the altermagnetic insulator/Pt interface

Research Article | arXiv:2501.19198

Miina Leiviskä, Reza Firouzmandi, Kyo-Hoon Ahn, Peter Kubaščik, Zbynek Soban, Satya Prakash Bommanaboyena, Christoph Müller, Dominik Kriegner, Sebastian Sailler, Michaela Lammel, Kranthi Kumar Bestha, Libor Šmejkal, Jakub Zelezny, Anja U. B. Wolter, Monika Scheufele, Johanna Fischer, Matthias Opel, Stephan Geprägs, Matthias Althammer, Bernd Büchner, Tomas Jungwirth, Lukáš Nádvorník, Sebastian T. B. Goennenwein, Vilmos Kocsis, Helena Reichlová

2024

Chiral phonons and phononic birefringence in ferromagnetic metal-bulk acoustic resonator hybrids

Research Article | Physical Review B 109, 024430 (2024)

Preprint: arXiv:2303.08429

Manuel Müller, Johannes Weber, Fabian Engelhardt, Victor A. S. V. Bittencourt, Thomas Luschmann, Mikhail Cherkasskii, Matthias Opel, Sebastian T.B. Goennenwein, Silvia Viola Kusminskiy, Stephan Geprägs, Rudolf Gross, Matthias Althammer, Hans Huebl

Printed Thin Magnetic Films via Ternary Hybrid Diblock Copolymer Films Containing Magnetic Iron Oxide and Nickel Nanoparticles

Research Article | ACS Applied Materials & Interfaces 16, 71060-71069 (2024)

Christopher R. Everett, Xinyu Jiang, Manuel A. Reus, Huaying Zhong, Martin Bitsch, Martina Plank, Markus Gallei, Matthias Opel, Matthias Schwartzkopf, Stephan V. Roth, Peter Müller-Buschbaum

Structural, electrical and magnetic properties of reactively DC sputtered Cu and Ti thin films. Application to Cu/Ti neutron supermirrors for low spin-flip applications

Research Article | Nuclear Instruments and Methods in Physics Research Section A 1059, 169005 (2024)

Jose Manuel Gómez-Guzmán, Matthias Opel, Tamás Veres, Peter Link, László Bottyán

2023

Impact of growth conditions on magnetic anisotropy on the magnon Hanle effect in α-Fe₂O₃

Research Article | APL Materials 11, 091115 (2023)

Preprint: arXiv:2306.00375

Monika Scheufele, Janine Gückelhorn, Matthias Opel, Akashdeep Kamra, Hans Huebl, Rudolf Gross, Stephan Geprägs, Matthias Althammer

Nonreciprocal Magnon Hanle Effect in Antiferromagnetic α-Fe2O3

Research Article | 2023 IEEE International Magnetic Conference - Short Papers INTERMAG Short Papers, 1-2 (2023)

Janine Gückelhorn, Sebastián de-la-Peña, Monika Scheufele, Matthias Grammer, Matthias Opel, Stephan Geprägs, Juan Carlos Cuevas, Rudolf Gross, Hans Huebl, Akashdeep Kamra, Matthias Althammer

Observation of nonreciprocal magnon Hanle effect

Research Article | Physical Review Letters 130, 216703 (2023)

Preprint: arXiv:2209.09040

Janine Gückelhorn, Sebastián de-la-Peña, Matthias Grammer, Monika Scheufele, Matthias Opel, Stephan Geprägs, Juan Carlos Cuevas, Rudolf Gross, Hans Huebl, Akashdeep Kamra, Matthias Althammer

Spin Hall Magnetoresistance in Antiferromagnetic Insulators

Research Article | 2023 IEEE International Magnetic Conference - Short Papers INTERMAG Short Papers, 1-2 (2023)

Stephan Geprägs, Matthias Opel, Johanna Fischer, Philipp Schwenke, Matthias Althammer, Hans Huebl, Rudolf Gross

Superspin ensembles of oxidized-Co_xFe_1−xS₂ with embedded magnetic nanoparticles

Research Article | Journal of Materials Research 38, 867-882 (2023)

Henrik Gabold, Chinawat Ekwongsa, Pinit Kidkhunthod, Rattikorn Yimnirun, Matthias Opel, and Amitesh Paul

2022

Carboxymethyl-Dextran-Coated Superparamagnetic Iron Oxide Nanoparticles for Drug Delivery: Influence of the Coating Thickness on the Particle Properties

Research Article | International Journal of Molecular Sciences 23, 14743 (2022)

Chiara Turrina, Davide Milani, Anna Klassen, Diana M. Rojas-González, Jennifer Cookman, Matthias Opel, Barbara Sartori, Petra Mela, Sonja Berensmeier, Sebastian P. Schwaminger

In Situ Study of FePt Nanoparticles-Induced Morphology Development during Printing of Magnetic Hybrid Diblock Copolymer Films

Research Article | Advanced Functional Materials 32, 2107667 (2022)

Wei Cao, Shanshan Yin, Martin Bitsch, Suzhe Liang, Martina Plank, Matthias Opel, Manuel A. Scheel, Markus Gallei, Oliver Janka, Matthias Schwartzkopf, Stephan V. Roth, Peter Müller-Buschbaum

Influence of low-energy magnons on magnon Hanle experiments in easy-plane antiferromagnets

Research Article | Physical Review B 105, 094440 (2022)

Preprint: arXiv:2112.03820

Janine Gückelhorn, Akashdeep Kamra, Tobias Wimmer, Matthias Opel, Stephan Geprägs, Rudolf Gross, Hans Huebl, Matthias Althammer

Revealing the effect of interstitial oxygen on the low-energy crystal electric field excitations of Pr³⁺ in 214-nickelates

Research Article | Physical Review B 105, 195147 (2022)

Rajesh Dutta, Avishek Maity, Anna Marsicano, J. Ross Stewart, Matthias Opel, Werner Paulus

2021

Controlling Domain-Wall Nucleation in Ta/CoFeB/MgO Nanomagnets via Local Ga⁺ Ion Irradiation

Research Article | Physical Review Applied 16, 014039 (2021)

Preprint: arXiv:2102.07540

Simon Mendisch, Fabrizio Riente, Valentin Ahrens, Luca Gnoli, Michael Haider, Matthias Opel, Martina Kiechle, Massimo Ruo Roch, Markus Becherer

Low Temperature Suppression of the Spin Nernst Angle in Pt

Research Article | Physical Review B 104, L140404 (2021)

Preprint: arXiv:2103.12697

Tobias Wimmer, Janine Gückelhorn, Sebastian Wimmer, Sergiy Mankovsky, Hubert Ebert, Matthias Opel, Stephan Geprägs, Rudolf Gross, Hans Huebl, Matthias Althammer

Quantifying the spin mixing conductance of EuO/W heterostructures by spin Hall magnetoresistance experiments

Research Article | Applied Physics Letters 118, 192401 (2021)

Preprint: arXiv:2103.02706

Paul Rosenberger, Matthias Opel, Stephan Geprägs, Hans Huebl, Rudolf Gross, Martina Müller, Matthias Althammer

Spray-Deposited Anisotropic Ferromagnetic Hybrid Polymer Films of PS-b-PMMA and Strontium Hexaferrite Magnetic Nanoplatelets

Research Article | ACS Appl. Mater. Interfaces 13, 1592 (2021)

Wei Cao, Shanshan Yin, Martina Plank, Andrei Chumakov, Matthias Opel, Wei Chen, Lucas P. Kreuzer, Julian E. Heger, Markus Gallei, Calvin J. Brett, Matthias Schwartzkopf, Artem A. Eliseev, Evgeny O. Anokhin, Lev A. Trusov, Stephan V. Roth, Peter Müller-Buschbaum

2020

Direct evidence for anisotropic three-dimensional magnetic excitations in a hole-doped antiferromagnet

Research Article | Physical Review B 102, 165130 (2020)

Rajesh Dutta, Avishek Maity, Anna Marsicano, J. Ross Stewart, Matthias Opel, Werner Paulus

Effect of interfacial oxidation layer in spin pumping experiments on Ni₈₀Fe₂₀/SrIrO₃ heterostructures

Research Article | Journal of Applied Physics 128, 083903 (2020)

T.S. Suraj, Manuel Müller, Sarah Gelder, Stephan Geprägs, Matthias Opel, Mathias Weiler, K. Sethupathi, Hans Huebl, Rudolf Gross, M.S. Ramachandra Rao, Matthias Althammer

Large spin Hall magnetoresistance in antiferromagnetic α-Fe₂O₃/Pt heterostructures

Research Article | Physical Review Applied 13, 014019 (2020)

Preprint: arXiv:1907.13393

Johanna Fischer, Matthias Althammer, Nynke Vlietstra, Hans Huebl, Sebastian T.B. Goennenwein, Rudolf Gross, Stephan Geprägs, Matthias Opel

Observation of Antiferromagnetic Magnon Pseudospin Dynamics and the Hanle Effect

Research Article | Physical Review Letters 125, 247204 (2020)

Preprint: arXiv:2008.00440

Tobias Wimmer, Akashdeep Kamra, Janine Gückelhorn, Matthias Opel, Stephan Geprägs, Rudolf Gross, Hans Huebl, Matthias Althammer

Precise control of J_eff=1/2 magnetic properties in Sr₂IrO₄ epitaxial thin films by variation of strain and thin film thickness

Research Article | Physical Review B 102, 214402 (2020)

Preprint: arXiv:2009.13185

Stephan Geprägs, Björn Erik Skovdal, Monika Scheufele, Matthias Opel, Didier Wermeille, Paul Thompson, Alessandro Bombardi, Virginie Simonet, Stéphane Grenier, Pascal Lejay, Gilbert Andre Chahine, Diana Quintero Castro, Rudolf Gross, Dan Mannix

Self-Assembly of Large Magnetic Nanoparticles in Ultrahigh Molecular Weight Linear Diblock Copolymer Films

Research Article | ACS Appl. Mater. Interfaces 12, 7557 (2020)

Wei Cao, Senlin Xia, Xinyu Jiang, Michael Appold, Matthias Opel, Martina Plank, Roy Schaffrinna, Lucas P. Kreuzer, Shanshan Yin, Markus Gallei, Matthias Schwartzkopf, Stephan V. Roth, Peter Müller-Buschbaum

Spin Hall magnetoresistance in antiferromagnetic insulators

Review | Journal of Applied Physics 127, 243902 (2020)

Preprint: arXiv:2004.02639

Stephan Geprägs, Matthias Opel, Johanna Fischer, Olena Gomonay, Philipp Schwenke, Matthias Althammer, Hans Huebl, Rudolf Gross

Static magnetic proximity effects and spin Hall magnetoresistance in Pt/Y₃Fe₅O₁₂ and inverted Y₃Fe₅O₁₂/Pt bilayers

Research Article | Physical Review B 102, 214438 (2020)

Preprint: arXiv:2010.03979

Stephan Geprägs, Christoph Klewe, Sibylle Meyer, Dominik Graulich, Felix Schade, Marc Schneider, Sonia Francoual, Stephen P. Collins, Katharina Ollefs, Fabrice Wilhelm, Andrei Rogalev, Yves Joly, Sebastian T.B. Goennenwein, Matthias Opel, Timo Kuschel, Rudolf Gross

Surface distortion of Fe dot-decorated TiO₂ nanotubular templates using time-of-flight grazing incidence small angle scattering

Research Article | Scientific Reports 10, 4038 (2020)

Neelima Paul, Jean-Francóis Moulin, Gaetano Mangiapia, Armin Kriele, Peter Müller-Buschbaum, Matthias Opel, Amitesh Paul

2019

Improving the modelling of susceptibility-induced spatial distortions in MRI-guided extra-cranial radiotherapy

Research Article | Physics in Medicine & Biology 64, 205006 (2019)

C. Kroll, O. Dietrich, J. Bortfeldt, C. Paganelli, G. Baroni, F. Kamp, S. Neppl, C. Belka, K. Parodi, M. Opel, M. Riboldi

Printed Thin Diblock Copolymer Films with Dense Magnetic Nanostructure

Research Article | ACS Appl. Mater. Interfaces 11, 21935 (2019)

Senlin Xia, Lin Song, Wei Chen, Volker Körstgens, Matthias Opel, Matthias Schwartzkopf, Stephan V. Roth, Peter Müller-Buschbaum

Role of interface quality for the spin Hall magnetoresistance in nickel ferrite thin films with bulk-like magnetic properties

Research Article | Applied Physics Letters 115, 092403 (2019)

Matthias Althammer, Amit Vikam Singh, Tobias Wimmer, Zbigniew Galazka, Hans Huebl, Matthias Opel, Rudolf Gross, Arunava Gupta

Spray-Coating Magnetic Thin Hybrid Films of PS-b-PNIPAM and Magnetite Nanoparticles

Research Article | Adv. Funct. Mater. 29, 1808427 (2019)

Senlin Xia, Lin Song, Nuri Hohn, Kun Wang, Sebastian Grott, Matthias Opel, Matthias Schwartzkopf, Stephan V. Roth, Peter Müller-Buschbaum

2018

Magnetic excitations and amplitude fluctuations in insulating cuprates

Research Article | Physical Review B 97, 024407 (2018)

N. Chelwani, A. Baum, T. Böhm, M. Opel, F. Venturini, L. Tassini, A. Erb, H. Berger, L. Forró, and R. Hackl

Magnetic nanoparticle-containing soft-hard diblock copolymer films with high order

Research Article | Nanoscale 10, 11930 (2018)

Senlin Xia, Lin Song, Volker Körstgens, Matthias Opel, Matthias Schwartzkopf, Stephan V. Roth, Peter Müller-Buschbaum

Phonon anomalies in FeS

Research Article | Physical Review B 97, 054306 (2018)

A. Baum, A. Milosavljevic, N. Lazarevic, M. M. Radonjic, B. Nikolic, M. Mitschek, Z. Inanloo Maranloo, M. Šcepanovic, M. Grujuic-Brojcin, N. Stojilovic, M. Opel, Aifeng Wang, C. Petrovic, Z.V. Popovic, R. Hackl

Printed Thin Magnetic Films Based on Diblock Copolymer and Magnetic Nanoparticles

Research Article | ACS Appl. Mater. Interfaces 10, 2982-2991 (2018)

Senlin Xia, Ezzeldin Metwalli, Matthias Opel, Paul A. Staniec, Eva M. Herzig, Peter Müller-Buschbaum

Spin Hall magnetoresistance in antiferromagnet/heavy-metal heterostructures

Research Article | Physical Review B 97, 014417 (2018)

Preprint: arXiv:1709.04158

Johanna Fischer, Olena Gomonay, Richard Schlitz, Kathrin Ganzhorn, Nynke Vlietstra, Matthias Althammer, Hans Huebl, Matthias Opel, Rudolf Gross, Sebastian T.B. Goennenwein, Stephan Geprägs

Structural and magnetic properties of cobalt iron disulfide (Co_xFe_1−xS₂) nanocrystals

Research Article | Scientific Reports 8, 4835 (2018)

Henrik Gabold, Zhongyue Luan, Neelima Paul, Matthias Opel, Peter Müller-Buschbaum, Matt Law, Amitesh Paul

2017

Production and characterization of long-term stable superparamagnetic iron oxide-shell silica-core nanocomposites

Research Article | Journal of Magnetism and Magnetic Materials 442, 497 (2017)

Angelika Nistler, Carolin Hartmann, Christine Rümenapp, Matthias Opel, Bernhard Gleich, Natalia P. Ivleva, Reinhard Niessner, Michael Seidel

Pure spin current transport in gallium doped zinc oxide

Research Article | Applied Physics Letters 110, 052403 (2017)

Matthias Althammer, Joynarayan Mukherjee, Stephan Geprägs, Sebastian T. B. Goennenwein, Matthias Opel, M.S. Ramachandra Rao, Rudolf Gross

2016

Lamellar Diblock Copolymer Films with Embedded Maghemite Nanoparticles

Research Article | Adv. Mater. Interfaces 3, 201500712 (2016)

Yuan Yao, Ezzeldin Metwalli, Matthias Opel, Martin Haese, Jean-François Moulin, Katia Rodewald, Bernhard Rieger, Peter Müller-Buschbaum

Spin Hall Magnetoresistance in a Canted Ferrimagnet

Research Article | Physical Review B 94, 094401 (2016)

Kathrin Ganzhorn, Joseph Barker, Richard Schlitz, Benjamin A. Piot, Katharina Ollefs, Francois Giullou, Fabrice Wilhelm, Andrei Rogalev, Matthias Opel, Matthias Althammer, Stephan Geprägs, Hans Huebl, Rudolf Gross, Gerrit E. W. Bauer, Sebastian T. B. Goennenwein

Untangling the contributions of cerium and iron to the magnetism of Ce-doped yttrium iron garnet

Research Article | Applied Physics Letters 108, 102407 (2016)

Blai Casals, Marina Espínola, Rafael Cichelero, Stephan Geprägs, Matthias Opel, Rudolf Gross, Gervasi Herranz, Josep Fontcuberta

2015

Anomalous Hall effect in YIG|Pt bilayers

Research Article | Applied Physics Letters 106, 132402 (2015)

Sibylle Meyer, Richard Schlitz, Stephan Geprägs, Matthias Opel, Hans Huebl, Rudolf Gross, Sebastian T. B. Goennenwein

Arrangement of Maghemite Nanoparticles via Wet Chemical Self-Assembly in PS-b-PNIPAM Diblock Copolymer Films

Research Article | ACS Appl. Mater. Interfaces 7, 13080-13091 (2015)

Yuan Yao, Ezzeldin Metwalli, Volker Körstgens, Daniel Moseguí González, Anna Miasnikova, Andre Laschewsky, Matthias Opel, Gonzalo Santoro, Stephan V. Roth, Peter Müller-Buschbaum

2014

Laser molecular beam epitaxy of ZnO thin films and heterostructures

Review | J. Phys. D: Appl. Phys. 47, 034002 (2014)

Matthias Opel, Stephan Geprägs, Matthias Althammer, Thomas Brenninger, Rudolf Gross

Nano- and Microstructures of Magnetic Field-Guided Maghemite Nanoparticles in Diblock Copolymer Films

Research Article | ACS Appl. Mater. Interfaces 6, 5244-5254 (2014)

Yuan Yao, Ezzeldin Metwalli, Martin A. Niedermeier, Matthias Opel, Chen Lin, Jing Ning, Jan Perlich, Stephan V. Roth, Peter Müller-Buschbaum

Self-Assembly of Diblock Copolymer-Maghemite Nanoparticle Hybrid Thin Films

Research Article | ACS Appl. Mater. Interfaces 6, 18152–18162 (2014)

Yuan Yao, Ezzeldin Metwalli, Jean-Franc¸ois Moulin, Bo Su, Matthias Opel, Peter Müller-Buschbaum

Temperature dependent spin transport properties of Platinum inferred from spin Hall magnetoresistance measurements

Research Article | Applied Physics Letters 104, 242411 (2014)

Sibylle Meyer, Matthias Althammer, Stephan Geprägs, Matthias Opel, Rudolf Gross, Sebastian T. B. Goennenwein

Unambiguous determination of spin dephasing times in ZnO

Review | Phys. Status Solidi B 251, No. 9, 1861-1871 (2014)

Sebastian Kuhlen, Ralph Ledesch, Robin de Winter, Matthias Althammer, Sebastian T.B. Goennenwein, Matthias Opel, Rudolf Gross, Thomas A. Wassner, Martin S. Brandt, Bernd Beschoten

Zinc Oxide - From Dilute Magnetic Doping to Spin Transport

Review | Phys. Status Solidi B 251, No. 9, 1700-1709 (2014)

Matthias Opel, Sebastian T.B. Goennenwein, Matthias Althammer, Karl-Wilhelm Nielsen, Eva-Maria Karrer-Müller, Sebastian Bauer, Konrad Senn, Christoph Schwark, Christian Weier, Gernot Güntherodt, Bernd Beschoten, Rudolf Gross

2013

Comment on 'Pt magnetic polarization on Y₃Fe₅O₁₂ and magnetotransport characteristics'

Research Article | arXiv:1307.4869

Stephan Geprägs, Sebastian T.B. Goennenwein, Marc Schneider, Fabrice Wilhelm, Katharina Ollefs, Andrei Rogalev, Matthias Opel, Rudolf Gross

Converse Magnetoelectric Effects in Fe₃O₄/BaTiO₃ Multiferroic Hybrids

Research Article | Physical Review B 88, 054412 (2013)

S. Geprägs, D. Mannix, M. Opel, S.T.B. Goennenwein, R. Gross

Investigation of Induced Pt Magnetic Polarisation in Pt/Y₃Fe₅O₁₂ Bilayers

Other | ESRF Highlights 2013, 88-89 (2013)

Stephan Geprägs, Sibylle Meyer, Stephan Altmannshofer, Matthias Opel, Fabrice Wilhelm, Andrei Rogalev, Rudolf Gross, Sebastian T.B. Goennenwein

Quantitative study of the spin Hall magnetoresistance in ferromagnetic insulator/normal metal hybrids

Research Article | Physical Review B 87, 224401 (2013)

Matthias Althammer, Sibylle Meyer, Hiroyasu Nakayama, Michael Schreier, Stephan Altmannshofer, Mathias Weiler, Hans Huebl, Stephan Geprägs, Matthias Opel, Rudolf Gross, Daniel Meier, Christoph Klewe, Timo Kuschel, Jan-Michael Schmalhorst, Günter Reiss, Liming Shen, Arunava Gupta, Yan-Ting Chen, Gerrit E. W. Bauer, Eiji Saitoh, Sebastian T. B. Goennenwein

Separation of semiconducting and ferromagnetic FeSi₂-nanoparticles by magnetic filtering

Research Article | Journal of Applied Physics 114, 134308 (2013)

Willi Aigner, Sabrina Niesar, Ervin Mehmedovic, Matthias Opel, Friedrich E. Wagner, Hartmut Wiggers, Martin Stutzmann

Spin Hall Magnetoresistance Induced by a Non-Equilibrium Proximity Effect

Research Article | Physical Review Letters 110, 206601 (2013)

H. Nakayama, M. Althammer, Y.-T. Chen, K. Uchida, Y. Kajiwara, D. Kikuchi, T. Ohtani, S. Geprägs, M. Opel, S. Takahashi, R. Gross, G. E. W. Bauer, S. T. B. Goennenwein, E. Saitoh

2012

Giant Magnetoelastic Effects in BaTiO₃-based Extrinsic Multiferroic Hybrids

Research Article | Physical Review B 86, 134432 (2012)

Stephan Geprägs, Matthias Opel, Sebastian T. B. Goennenwein, Rudolf Gross

Investigation of induced Pt magnetic polarization in Pt/Y₃Fe₅O₁₂ bilayers

Research Article | Appl. Phys. Lett. 101, 262407 (2012)

Stephan Geprägs, Sibylle Meyer, Stephan Altmannshofer, Matthias Opel, Fabrice Wilhelm, Andrei Rogalev, Rudolf Gross, Sebastian T.B. Goennenwein

Local charge and spin currents in magnetothermal landscapes

Research Article | Physical Review Letters 108, 106602 (2012)

Mathias Weiler, Matthias Althammer, Franz D. Czeschka, Hans Huebl, Martin S. Wagner, Matthias Opel, Inga-Mareen Imort, Günter Reiss, Andy Thomas, Rudolf Gross, Sebastian T. B. Goennenwein

Spin transport and spin dephasing in zinc oxide

Research Article | Appl. Phys. Lett. 101, 082404 (2012)

Matthias Althammer, Eva-Maria Karrer-Müller, Sebastian T. B. Goennenwein, Matthias Opel, and Rudolf Gross

Spintronic oxides grown by laser-MBE

Review | Journal of Physics D: Applied Physics 45, 033001 (2012)

Matthias Opel

Structural, magnetic and electric behavior of the new Ba₂TiMoO₆ material

Research Article | Physica B 407, 3074-3077 (2012)

C. E. Alarcon-Suesca, M. Opel, D. A. TellezLandínez Téllez, J. Roa-Rojas

2011

Novel Multifunctional Materials Based on Oxide Thin Films and Artificial Heteroepitaxial Multilayers

Research Article | Physica Status Solidi A 208, 232-251 (2011)

M. Opel, S. Geprägs, E.P. Menzel, A. Nielsen, D. Reisinger, K.-W. Nielsen, A. Brandlmaier, F.D. Czeschka, M. Althammer, M. Weiler, S.T.B. Goennenwein, J. Simon, M. Svete, Wentao Yu, S.-M. Hühne, W. Mader, and R. Gross

2010

Advanced Spectroscopic Synchrotron Techniques to Unravel the Intrinsic Properties of Dilute Magnetic Oxides: the Case of Co:ZnO

Research Article | New J. Phys. 12, 013020 (2010)

A. Ney, M. Opel, T.C. Kaspar, V. Ney, S. Ye, K. Ollefs, T. Kammermeier, S. Bauer, K.-W. Nielsen, S. T. B. Goennenwein, M. H. Engelhard, S. Zhou, K. Potzger, J. Simon, W. Mader, S. M. Heald, J. C. Cezar, F. Wilhelm, A. Rogalev, R. Gross and S. A. Chambers

Electric field controlled manipulation of the magnetization in Ni/BaTiO₃ hybrid structures

Research Article | Applied Physics Letters 96, 142509 (2010)

S. Geprägs, A. Brandlmaier, M. Opel, R. Gross, S.T.B. Goennenwein

Magnetic interference patterns in 0-pi-SIFS Josephson junctions: Effects of asymmetry between 0 and pi-regions

Research Article | Physical Review B 81, 054522 (2010)

M. Kemmler, M. Weides, M. Weiler, M. Opel, S. T. B. Goennenwein, A. S. Vasenko, A. A. Golubov, H. Kohlstedt, D. Koelle, R. Kleiner, E. Goldobin

Superconductivity of Calcium C₆₀ Intercalation Compound Synthesized by Shock-Wave Pressure

Research Article | Fullerenes, Nanotubes and Carbon Nanostructures 18, 376-380 (2010)

Yu. A. Ossipyan, N. S. Sidorov, A. V. Palnichenko, O. M. Vyaselev, M. V. Kartsovnik, M. Opel, V. V. Avdonin, D. V. Shakhrai, V. E. Fortov

2009

Epitaxial Growth and Magnetic Properties of Sr₂CrReO₆ Thin Films

Research Article | J. Magn. Magn. Mater., 321, 2001-2004 (2009)

S. Geprägs, F.D. Czeschka, M. Opel, S.T.B. Goennenwein, W. Yu, W. Mader, and R. Gross

Epitaxial Zn_xFe_3-xO₄ Thin Films: A Spintronic Material with Tunable Electrical and Magnetic Properties

Research Article | Physical Review B 79, 134405 (2009)

D. Venkateshvaran, M. Althammer, A. Nielsen, S. Geprägs, M.S. Ramachandra Rao, S. T. B. Goennenwein, M. Opel, and R. Gross

Giant magnetic anisotropy changes in Sr₂CrReO₆ thin films on BaTiO₃

Research Article | Applied Physics Letters 95, 062508 (2009)

F.D. Czeschka, S. Gepraegs, M. Opel, S.T.B. Goennenwein, R. Gross

Voltage controlled inversion of magnetic anisotropy in a ferromagnetic thin film at room temperature

Research Article | New J. Phys. 11, 013021 (2009)

M. Weiler, A. Brandlmaier, S. Gepraegs, M. Althammer, M. Opel, C. Bihler, H. Huebl, M. S. Brandt, R. Gross, S. T. B. Goennenwein

2008

All Oxide Ferromagnet/Semiconductor Epitaxial Heterostructures

Research Article | Applied Physics Letters 93, 162510 (2008)

A. Nielsen, A. Brandlmaier, M. Althammer, W. Kaiser, M. Opel, J. Simon, W. Mader, S.T.B. Goennenwein, and R. Gross

Anomalous Hall Effect in Magnetite: Universal Scaling Relation Between Hall and Longitudinal Conductivity in Low-Conductivity Ferromagnets

Research Article | Physical Review B 78, 092405 (2008)

Deepak Venkateshvaran, Wolfgang Kaiser, Andrea Boger, Matthias Althammer, M.S. Ramachandra Rao, Sebastian T.B. Goennenwein, Matthias Opel, Rudolf Gross

Ga_1-xMn_xAs/piezoelectric actuator hybrids: A model system for magnetoelastic magnetization manipulation

Research Article | Physical Review B 78, 045203 (2008)

C. Bihler, M. Althammer, A. Brandlmaier, S. Geprägs, M. Weiler, M. Opel, W. Schoch, W. Limmer, R. Gross, M. S. Brandt, and S.T.B. Gönnenwein,

In situ Manipulation of Magnetic Anisotropy in Magnetite Thin Films

Research Article | Physical Review B 77, 104445 (2008)

A. Brandlmaier, S. Geprägs, M. Weiler, A. Boger, M. Opel, H. Huebl, C. Bihler, M.S. Brandt, B. Botters, D. Grundler, R. Gross, S.T.B. Gönnenwein

Nanosized superparamagnetic precipitates in cobalt-doped ZnO

Research Article | Eur. Phys. J. B 63, 437-444 (2008)

M. Opel, K.-W. Nielsen, S. Bauer, S.T.B. Goennenwein, J.C. Cezar, D. Schmeisser, J. Simon, W. Mader and R. Gross

Piezo-voltage Control of Magnetization Orientation in a Ferromagnetic Semiconductor

Research Article | phys. stat. sol. (RRL) 2, 96 - 98 (2008)

S.T.B. Goennenwein, M. Althammer, C. Bihler, A. Brandlmaier, S. Geprägs, M. Opel, R. Gross, W. Schoch, W. Limmer, H. Huebl, M. S. Brandt

Superconductivity of C₆₀ fullerite intercalated with Ca by means of shock-wave pressure technique

Research Article | Chem. Phys. Lett. 457, 74-77 (2008)

Yu. A. Ossipyan, N.S. Sidorov, A.V. Palnichenko, O.M. Vyaselev, M.V. Kartsovnik, M. Opel, V.V. Avdonin, D.V. Shakhrai, N.V. Biktimirova, A.A. Golyshev

Suppression of hole-mediated ferromagnetism in GaMnP by hydrogen

Research Article | Journal of Applied Physics 104, 013908 (2008)

C. Bihler, M. Kraus, M. S. Brandt, S.T.B. Goennenwein, M. Opel, M. A. Scarpulla, R. Farshchi, O. D. Dubon

2007

Effect of substrate on the electrical transport property of Ba₂FeNbO₆ double perovskite thin films

Research Article | Journal of Physics D: Applied Physics 40, 1430-1434 (2007)

N. Rama, J.B. Philipp, M. Opel, V. Sankaranarayanan, R. Gross & M.S. Ramachandra Rao

Electrically detected ferromagnetic resonance

Research Article | Appl. Phys. Lett., 90, 162507 (2007)

S.T.B. Gönnenwein, S.W. Schink, A. Brandlmaier, A. Boger, M. Opel, R. Gross, R.S. Keizer, T.M. Klapwijk, A. Gupta, H. Huebl, C. Bihler & M.S. Brandt

Influence of disorder on the low and high temperature magnetization and magnetoresistance in Pr_0.6R_0.1Sr_0.3MnO₃ (R = Tb, Y, Ho and Er) manganite

Research Article | J. Alloys and Compounds 443, 7-10 (2007)

N. Rama, V. Sankaranarayanan, M. Opel, R. Gross & M.S. Ramachandra Rao

Magnetocrystalline anisotropy and magnetization reversal in GaMnP synthesized by ion implantation and pulsed-laser melting

Research Article | Physical Review B 75, 214419 (2007)

C. Bihler, M. Kraus, H. Huebl, M. S. Brandt, S. T. B. Goennenwein, M. Opel, M. A. Scarpulla, P. R. Stone, R. Farshchi, O. D. Dubon

Multiferroic materials based on artificial thin film heterostructures

Other | Philosophical Magazine Letters 87, 141- 154 (2007)

S. Geprägs, M. Opel, S.T.B. Gönnenwein & R. Gross

2006

Ferroelectric and magnetic properties of Ho2CuTiO6 double perovskite

Research Article | Journal of Magnetism and Magnetic Materials 303, 'E332'-'E334' (2006)

Reddy, S. Bhaskar; Kant, K. Mohan; Rao, K. Prasad; Opel, Matthias; Gross, R.; Rao, M. S. Ramachandra

Ferromagnetism in epitaxial Zn_0.95Co_0.05O films grown on ZnO and Al₂O₃

Research Article | physica status solidi (a) 203, 3581-3596 (2006)

K. Nielsen, S. Bauer, M. Lübbe, S.T.B. Gönnenwein, M. Opel, J. Simon, W. Mader & R. Gross

Magnetic and structural properties of Ge_xMn_{1 - x} films: Precipitation of intermetallic nanomagnets

Research Article | Physical Review B 74, 214411 (2006)

S. Ahlers, D. Bougeard, N. Sircar, G. Abstreiter, A. Trampert, M. Opel & R. Gross

Magnetic and structural properties of GexMn1-x films: Precipitation of intermetallic nanomagnets

Research Article | Physical Review B 74, - (2006)

Ahlers, S.; Bougeard, D.; Sircar, N.; Abstreiter, G.; Trampert, A.; Opel, M.; Gross, R.

Spin-glass-like behavior of Ge: Mn

Research Article | Physical Review B 74, 045330 (2006)

Jaeger, C.; Bihler, C.; Vallaitis, T.; Goennenwein, S. T. B.; Opel, M.; Gross, R.; Brandt, M. S.

Spin-glass-like behavior of Ge:Mn

Research Article | Physical Review B 74, 045330 (2006)

C. Jaeger, C. Bihler, T. Vallaitis, S. T. B. Goennenwein, M. Opel, R. Gross & M. S. Brandt

2005

A-site dependent percolative thermopower and Griffiths phase in Pr(0.7-x)HoxSr0.3MnO3 (x=0.0, 0.04, 0.08, and 0.1)

Research Article | Journal of Applied Physics 97, 10H713 (2005)

Rama, N; Opel, M; Sankaranarayanan, V; Gross, R; Ogale, SB; Venkatesan, T; Rao, MSR

A-site dependent percolative thermopower and Griffiths phase in Pr_{0.7 - x}Ho_xSr_0.3MnO₃ (x = 0.0, 0.04, 0.08 and 0.1)

Research Article | 49th Annual Conference on Magnetism and Magnetic Materials 97, 10H713 (2005)

N. Rama, M. Opel, V. Sankaranarayanan, R. Gross, S. B. Ogale, T. Venkatesan & M. S. Ramachandra Rao

Epitaxial growth of electron doped double perovskites La_xA_2-xCrWO₆ with A=Sr and Ca

Research Article | Journal of Magnetism and Magnetic Materials 290--291, 1154-1157 (2005)

P. Majewski, S. Geprägs, A. Boger, M. Opel, L. Alff & R. Gross

Ferromagnetism in Mn-doped ZnO due to impurity bands

Research Article | Superlattices and Microstructures 37, 327-332 (2005)

K.-W. Nielsen, J.B. Philipp, M. Opel, A. Erb, J. Simon, L. Alff & R. Gross

Low Temperature Properties and Superconductivity of LuB₁₂

Research Article | Journal of Low Temperature Physics 140, 339-353 (2005)

K. Flachbart, S. Gabáni, K. Gloos, M. Meissner, M. Opel, Y. Paderno, V. Pavlík, P. Samuely, E. Schuberth, N. Shitsevalova, K. Siemensmeyer & P. Szabó

Low temperature properties and superconductivity of LuB12

Research Article | Journal of Low Temperature Physics 140, 339-353 (2005)

Flachbart, K; Gabani, S; Gloos, K; Meissner, M; Opel, M; Paderno, Y; Pavlik, V; Samuely, P; Schuberth, E; Shitsevalova, N; Siemensmeyer, K; Szabo, P

Magnetic moments of W 5d in Ca₂CrWO₆ and Sr₂CrWO₆ double perovskites

Research Article | Physical Review B 72, 132402 (2005)

P. Majewski, S. Geprägs, A. Boger, M. Opel, A. Erb, R. Gross, G. Vaitheeswaran, V. Kanchana, A. Delin, F. Wilhelm, A. Rogalev & L. Alff

X-ray magnetic circular dichroism study of Re 5d magnetism in Sr₂CrReO₆

Research Article | Applied Physics Letters 87, 202503 (2005)

P. Majewski, S. Geprägs, O. Sanganas, M. Opel, R. Gross, F. Wilhelm, A. Rogalev & L. Alff

2004

A-site-disorder-dependent percolative transport and Griffiths phase in doped manganites

Research Article | Physical Review B 70, 224424 (2004)

N. Rama, M. S. Ramachandra Rao, V. Sankaranarayanan, P. Majewski, S. Geprägs, M. Opel & R. Gross

Effect of rare earth ion substitution on the magnetic and transport properties of Pr_0.7RE_0.04Sr_0.26MnO₃ (RE = Er, Tb and Ho)

Research Article | European Physical Journal B 38, 553-557 (2004)

N. Rama, J. B. Philipp, M. Opel, A. Erb, V. Sankaranarayanan, R. Gross, M. S. Ramachandra Rao

Hall effect, magnetization, and conductivity of Fe₃O₄ epitaxial thin films

Research Article | Applied Physics Letters 85, 4980-4982 (2004)

D. Reisinger, P. Majewski, M. Opel, L. Alff & R. Gross

Hydrogen and magnetism in Ga_1-xMn_xAs

Research Article | Advances in Solid State Physics 44, 453-465 (2004)

S.T.B. Goennenwein, T. A. Wassner, H. Huebl, A. Koeder, W. Schoch, A. WangJ.B. Philipp, M. Opel, R. Gross, M. Stutzmann, M.S. Brandt

Hydrogen control of ferromagnetism in a dilute magnetic semiconductor

Research Article | Physical Review Letters 92, 227202 (2004)

S.B.T. Goennenwein, T.A. Wassner, T. Graf, H. Huebl, J.B. Philipp, M. Opel, R. Gross, A. Koeder, W. Schoch, A. Waag, M.S. Brandt

Magnetoresistance and magnetic properties of the double perovskites

Research Article | Acta Physica Polonica A 105, 7-26 (2004)

J.B. Philipp, P. Majewski, D. Reisinger, S. Geprags, M. Opel, A. Erb, L. Alff, R. Gross

Study of magnetic properties A₂B'NbO₆ (A=BaSr, BaSr and B' = Fe, Mn) double perovskites

Research Article | Journal of Applied Physics 95, 7528-7530 (2004)

N. Rama, J. B. Philipp, M. Opel, K. Chandrasekaran, V. SankaranarayananR. Gross, M.S. Ramachandra Rao

2003

Epitaxial growth and transport properties of Sr₂CrWO₆ thin films

Research Article | Journal of Applied Physics 93, 6853-6855 (2003)

J.B. Philipp, D. Reisinger, M. Schonecke, M. Opel, A. Marx, A. Erb, L. Alff, and R. Gross

Epitaxy of Fe₃O₄ on Si(001) by pulsed laser deposition using a TiN/MgO buffer layer

Research Article | Journal of Applied Physics 94, 1857-1863 (2003)

D. Reisinger, M. Schonecke, T. Brenninger, M. Opel, A. Erb, L. Alff, and R. Gross

Orbital order and anisotropic transport properties in doped manganites induced by epitaxial coherency strain

Research Article | Journal of Applied Physics 93, 7373-7375 (2003)

J. Klein, J. B. Philipp, D. Reisinger, M. Opel, A. Marx, A. ErbL. Alff, and R. Gross

2002

Doping dependence of the electronic Raman spectra in cuprates

Research Article | Journal of Physics and Chemistry of Solids 63, 2345-2348 (2002)

F. Venturini, M. Opel, R. Hackl, H. Berger, L. Forro, B. Revaz

Observation of an Unconventional Metal-Insulator Transition in Overdoped CuO₂ Compounds

Research Article | Physical Review Letters 89, 107003 (2002)

F. Venturini, M. Opel, T.P. Devereaux, J.K. Freericks, Tütto, B. Revaz, E. Walker, H. Berger, L. Forró & R. Hackl

2001

A light-scattering study of dynamical carrier properties in cuprate systems

Research Article | Ferroelectrics 249, 155-164 (2001)

M. Opel, R. Nemetschek, F. Venturini, R. Hackl, I. Tutto, H. Berger, L. Forro, A. Erb, B. Revaz, E. Walker

2000

Carrier relaxation, pseudogap, and superconducting gap fn high-T-c cuprates: A Raman scattering study

Research Article | Physical Review B 61, 9752-9774 (2000)

Opel, M; Nemetschek, R; Hoffmann, C; Philipp, R; Muller, PF; Hackl, R; Tutto, I; Erb, A; Revaz, B; Walker, E; Berger, H; Forro, L

Superconducting gap and pseudogap in Bi-2212

Research Article | Physica B 284, 669-670 (2000)

M. Opel, F. Venturini, R. Hackl, B. Revaz, H. Berger, L. Forro

1999

Physical origin of the buckling in CuO2: Electron-phonon coupling and Raman spectra

Research Article | Physical Review B 60, 9836-9844 (1999)

Opel, M; Hackl, R; Devereaux, TP; Virosztek, A; Zawadowski, A

Pseudogap and superconducting gap in YBa2Cu3O6+x: A Raman study

Research Article | Journal of Low Temperature Physics 117, 347-351 (1999)

M. Opel, M. Gotzinger, C. Hoffmann, R. Nemetschek, R. Philipp, F. Venturini, R. Hackl, A. Erb, E. Walker

Raman spectroscopy in YBa2Cu3O6+x and Bi2Sr2(CaxY1-x)Cu2O8+delta: Pseudogap and superconducting gap

Research Article | PHYSICA STATUS SOLIDI B-BASIC RESEARCH 215, 471-476 (1999)

Opel, M; Nemetschek, R; Venturini, F; Hackl, R; Erb, A; Walker, E; Berger, H; Forro, L

1998

d+s wave superconductivity: Analysis of the electronic Raman data of YBa2Cu3O7-delta and other cuprates

Research Article | EUROPEAN PHYSICAL JOURNAL B 5, 495-503 (1998)

Nemetschek, R; Hackl, R; Opel, M; Philipp, R; Beal-Monod, MT; Bieri, JB; Maki, K; Erb, A; Walker, E

Enhanced electron-phonon coupling and its irrelevance to high T-c superconductivity

Research Article | Solid State Communications 108, 407-411 (1998)

Devereaux, TP; Virosztek, A; Zawadowski, A; Opel, M; Muller, PF; Hoffmann, C; Philipp, R; Nemetschek, R; Hackl, R; Erb, A; Walker, E; Berger, H; Forro, L

Pseudogap and superconducting gap in the electronic Raman spectra of underdoped cuprates

Research Article | JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 59, 1942-1946 (1998)

Opel, M; Nemetschek, R; Hoffmann, C; Muller, PF; Philipp, R; Hackl, R; Berger, H; Forro, L; Erb, A; Walker, E

1996

A study of critical and thermal pair breaking in differently doped Cu-O superconductors by electronic Raman scattering

Research Article | CZECHOSLOVAK JOURNAL OF PHYSICS 46, 1107-1108 (1996)

Opel, M; Muller, P; Nemetschek, R; Stadlober, B; Hackl, R; Berger, H; Forro, L

Electronic Raman scattering in copper-oxide superconductors and related compounds

Research Article | SPECTROSCOPIC STUDIES OF SUPERCONDUCTORS, PTS A AND B: PT A - INFRARED AND RAMAN SPECTRA; PT B - TUNNELING, PHOTOELECTRON, AND OTHER SPECTRA 2696, 194-204 (1996)

Hackl, R; Krug, G; Nemetschek, R; Opel, M; Stadlober, B

Electronic Raman scattering in CuO2 superconductors

Research Article | Journal of Low Temperature Physics 105, 733-742 (1996)

Hackl, R; Opel, M; Muller, PF; Krug, G; Stadlober, B; Nemetschek, R; Berger, H; Forro, L

1995

Study of k-dependent electronic properties in cuprate superconductors using Raman spectroscopy

Research Article | JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 56, 1841-1842 (1995)

Stadlober, B; Krug, G; Nemetschek, R; Opel, M; Hackl, R; Einzel, D; Schuster, C; Devereaux, TP; Forro, L; Cobb, JL; Markert, JT; Neumeier, JJ

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