Focus Session @ DPG 2014: Chiral Domain Walls
German Physical Society
- 02 Apr 2014 09:30
- 02 Apr 2014 12:30
- Dresden, Germany
Chiral domain walls in ultrathin films
During the last year, we witnessed a break through in the observation and application of chiral domain walls to spintronics. A couple of years ago  the presence of chiral domain walls due to the Dzyaloshinskii-Moriya interaction in perpendicularly magnetized structure-inversion asymmetric Fe films on W(110) was theoretically predicted and experimentally confirmed by spin-polarized scanning tunneling microscopy . Using the Bauer-LEEM at Berkeley, Yizheng Wu [3,4] and his group were able to show that these novel types of walls in ultrathin films are a rather general phenomenon and that the chirality or "handedness" of the domain wall can be engineered using different materials, stacking and combinations.
André Thiaville  showed that the Dzyaloshinskii-Moriya interaction stabilizes the domain wall during motion and larger speeds can be sustained till the walker breakdown sets in. How currents excite chiral domain walls and how this fits in into a potential device concept was central to the study undertaken by the Parkin  and Beach groups . I think this is an exciting new direction that should be highlighted.
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|Contributions:||Invited and contributed talks, poster session|
Matthias Bode (confirmed)
Julius-Maximilians University of Würzburg, Germany
Tentative Title: Chiral domain walls in Fe nano wires on W(110)
YiZheng Wu (confirmed)
Department of Physics, State Key Laboratory of Surface Physics and Advanced Materials Laboratory, Center for Spintronic Devices and Applications, Fudan University, Shanghai, China
Tentative Titel: Tailoring the chirality of magnetic domain walls by interface engineering
Laboratoire de Physique des Solides, Univ. Paris-Sud
Tentative Titel: Dynamics of Dzyaloshinskii domain walls in ultrathin magnetic films
Geoffrey S. D. Beach (confirmed)
Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge
Tentative Titel: Current-driven dynamics of chiral ferromagnetic domain walls
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