Uni-Logo Koordinator des Kolloquiums des Seminars:
Prof. Dr. Hans-Joachim Elmers
Institut für Physik, KOMET 335
Johannes Gutenberg-Universität
elmers@mail.uni-mainz.de
Jo Gu-Uni Mainz

SFB/TR49/SFB TRR 173 Spin+X-Kolloquium - Seminar experimentelle Physik der kondensierten Materie

SFB/TR49 - Prof. Dr. Elmers

Sondertermin/raum: Donnerstag, den 21.09.2017 um 13:00 Uhr s.t. im MEDIEN-Raum, Staudinger Weg 7, 3. Stock, Raum 03-431


Dzyaloshinskii-Moriya interaction in antiferromagnetic systems

Dr. Alireza Qaiumzadeh, Norges teknisk-naturvitenskaplige universitet (NTNU), Institutt for fysikk, Trondheim, Norway

The Dzyaloshinskii-Moriya interaction (DMI) is an antisymmetric exchange interaction between localized spins in magnetic materials, induced by relativistic spin-orbit coupling. In this talk, I firstly present a theory for the calculation of DMI and show how a large non-homogeneous DMI, a Lifshitz-type invariant term, might be induced at the interface of antiferromagnetic/heavy-metal bilayers [1]. Then, I will demonstrate the possibility of all-magnonic helicity-dependent domain-wall motion in the presence of this chiral interaction [2]. [1] A. Qaiumzadeh, I. Ado, M. Titov, R. A. Duine, and A. Brataas, to be submitted (2017). [2] A. Qaiumzadeh, L. A. Kristiansen, and A. Brataas, arXiv:1705.01572.


Kontakt: Daniela Reibel-ElBatanony, reibel@uni-mainz.de