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Time:	Thursday, 14:00 - 15:30 h
Place:	Seminar Room 143 Walther-Meißner-Institute Walther-Meißner-Str. 8 Research Campus Garching
Date	Speaker	Title
18.10.2018 and 25.10.2018	Dr. Mathias Weiler, Dr. Matthias Althammer, Dr. Stephan Geprägs, Dr. H. Huebl Walther-Meißner-Institut (E23) Bayerische Akademie der Wissenschaften (BAdW) and Technische Universität München (TUM)	Preliminary discussion and assignment of topics: Room 143
22.11.2018	Tobias Wimmer WMI	Ultra-enhanced spin transport in YIG
29.11.2018	Titel, Name Affiliation	Title of Talk
06.12.2018	Nynke Vlietstra WMI	Controlling the magnon transport in YIG
13.12.2018	Luis Flacke WMI	Low damping in a metallic ferromagnet
24.01.2019	Manuel Müller WMI	Spin pumping in superconductor/ferromagnet hybrids
31.01.2019	Andreas Faltermeier WMI	NbN superconducting resonators
07.02.2019	Lukas Liensberger WMI	Mode hybridization in GdIG

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This seminar deals with spin-related phenomena in solid state physics.

The focus of the seminar will be on
- Skyrmions
- Pure spin currents

All topics have substantial overlap with magnetism-related research activities at the WMI and the TUM physics department. Seminar talks can be given either in English or in German.

The seminar is particularly relevant for the special courses on "Magnetism" and "Spintronics". It is suitable for bachelor and master students in the 6. semester and higher.

Topics for seminar talks in WS2018/19:

Skyrmionics

1. Observation of two independent skyrmion phases in a chiral magnetic material (Chacon et al., Nature Physics 14, 936 (2018) https://doi.org/10.1038/s41567-018-0184-y )
2. Magnetostatic twists in room-temperature skyrmions explored by nitrogen-vacancy center spin texture reconstruction (Dovzhen et al., Nature Communications 9, 2712 (2018) https://doi.org/10.1038/s41467-018-05158-9 )
3. Blowing magnetic skyrmion bubbles, (Jiang et al., Science 349, 283 (2015), https://doi.org/10.1126/science.aaa1442 )
4. Fast current-driven domain walls and small skyrmions in a compensated ferrimagnet (Caretta et al., Nature Nanotechnology (2018) https://doi.org/10.1038/s41565-018-0255-3 )

All-electrical magnon transport:

1. Nonlinear spin conductance of yttrium iron garnet thin films driven by large spin-orbit torque (Thiery et al., Physical Review B 97, 060409 (2018) https://doi.org/10.1103/PhysRevB.97.060409 )
2. Efficient injection and detection of out-of-plane spins via the anomalous spin Hall effect in permalloy nanowires, (Das et al., Nano Lett 18, 5633 https://doi.org/10.1021/acs.nanolett.8b02114 )
3. Observation of magnon mediated current drag in Pt/YIG/Pt trilayers, (Li et al. Nature Comm. 7, 10858 (2016), https://doi.org/10.1038/ncomms10858)

Magnon Bose-Einstein condensates:

1. From Kinetic Instability to Bose-Einstein Condensation and Magnon Supercurrents, (Kreil et al., Physical Review Letters 121, 077203, (2018) https://doi.org/10.1103/PhysRevLett.121.077203 )
2. Supercurrent in a room-temperature Bose–Einstein magnon condensate (Bozhko et al., Nature Physics 12, 1057 (2016), https://doi.org/10.1038/nphys3838 )
3. Dynamic phase diagram of dc-pumped magnon condensates (Bender et al., Physical Review B 90, 094409 (2014), https://doi.org/10.1103/PhysRevB.90.094409 )
4. Magnon-magnon interactions in a room-temperature magnonic Bose-Einstein condensate (Dzyapko et al., Physical Review B 96, 064438, (2017), https://doi.org/10.1103/PhysRevB.96.064438 )

 

Contact: Matthias Althammer (Tel.: 089 289 14311, matthias.althammer@wmi.badw.de), Hans Huebl (Tel.: 089 289 1420, hans.huebl@wmi.badw.de), Mathias Weiler (Tel.: 089 289 14226, mathias.weiler@wmi.badw.de)

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For general information on the teaching program of TUM see TUMonline.

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