Dr. Matthias Opel

Contact
Room 135
+49 (0) 89 289 - 14237
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 high-temperature superconductors at the Walther-Meissner-Institut (WMI).

As a PhD student, he continued with the investigation of the electronic system including phonon, magnon, and electron interactions in both superconducting and antiferromagnetic copper-oxide materials. He received his PhD in the year 2000.

He then switched his research topic to multifunctional oxides and studied epitaxial ferromagnetic thin films and multilayers. He became a permanent staff member (senior scientist) in the year 2006. His current research interests are oxide electronics and antiferromagnetic spintronics.

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

 

Recent Courses
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-CoxFe1−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 Jeff=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 (CoxFe1−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 ZnxFe3-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
Ga1-xMnxAs/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 Pr0.6R0.1Sr0.3MnO3 (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 Zn0.95Co0.05O 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 GexMn1 - 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 Pr0.7 - xHoxSr0.3MnO3 (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 LaxA2-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 Pr0.7RE0.04Sr0.26MnO3 (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 Ga1-xMnxAs
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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