Speaker
Ms
Ping Che
(Institute of Materials and Laboratory of Nanoscale Magnetic Materials and Magnonics, École polytechnique fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland)
Description
The chiral ferrimagnet Cu2OSeO3 hosts topologically protected spin textures known as magnetic skyrmion lattices and exhibit characteristic magnon band structures. We conducted scanning Brillouin light scattering (BLS) spectroscopy on bulk-shape single crystals of Cu2OSeO3 at low temperature with magnetic field applied along (100). Multiple magnon modes were observed in conical and field-polarized state and attributed to bulk magnon modes with a high wavevector of up to k = 35.6 rad/micrometer. BLS studies hence enable one to explore anisotropic characteristics of magnon bandstructures for differently oriented Cu2OSeO3 crystals. This work is support by SNSF via 171003 and DFG TRR80.
Author
Ms
Ping Che
(Institute of Materials and Laboratory of Nanoscale Magnetic Materials and Magnonics, École polytechnique fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland)
Co-authors
Mr
Bin Lu
(Institute of Materials and Laboratory of Nanoscale Magnetic Materials and Magnonics, École polytechnique fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland)
Dr
Helmuth Berger
(Institut de Physique de la Matière Complexe, École polytechnique fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland)
Dr
Andreas Bauer
(Physik Department E51, Technische Universität München, 85748 Garching, Germany)
Prof.
Christian Pfleiderer
(Physik Department E51, Technische Universität München, 85748 Garching, Germany)
Prof.
Dirk Grundler
(Institute of Materials and Laboratory of Nanoscale Magnetic Materials and Magnonics, École polytechnique fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland)
