Speaker
Ms
Ping Che
(École polytechnique fédérale de Lausanne)
Description
The chiral ferrimagnet Cu2OSeO3 hosts topologically protected spin textures known as magnetic skyrmions. It has been shown to provide novel functionality in microwave technology due to e.g. dichroism. We conducted broadband spin-wave spectroscopy on different single crystals of Cu2OSeO3 with magnetic fields applied in different orientations. In the field-polarized phase at 5K we observe numerous sharp resonances that we attribute to discretized spin waves in the mm-long crystals. Their observation substantiates a very low damping parameter which is key for microwave applications. Support by DFG TRR80, DFG FOR960, ERC Advanced Grant 291079 (TOPFIT) and SNSF Sinergia Network NanoSkyrmionics CRSII5 171003 is acknowledged.
Author
Ms
Ping Che
(École polytechnique fédérale de Lausanne)
Co-authors
Dr
Ioannis Stasinopoulos
(Technische Universität München)
Dr
Andreas Bauer
(Physik Department E51, Technische Universität München)
Dr
Johannes Waizner
(Institut für Theoretische Physik, Universität zu Köln)
Dr
Helmuth Berger
(École polytechnique fédérale de Lausanne)
Dr
Markus Garst
(Institut für Theoretische Physik, Technische Universität Dresden)
Prof.
Christian Pfleiderer
(Physik Department E51, Technische Universität München)
Dirk Grundler
(EPFL)
