Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session B57: Magnonics I
11:30 AM–2:30 PM,
Monday, March 6, 2023
Room: Room 303
Sponsoring
Unit:
GMAG
Chair: Jiaming He, University of Texas at Austin
Abstract: B57.00007 : Phase transition in magnon bands in a honeycomb ferromagnet driven by sublattice symmetry breaking*
1:06 PM–1:18 PM
Presenter:
Hongseok Kim
(KAIST)
Authors:
Hongseok Kim
(KAIST)
Se Kwon Kim
(KAIST)
of the next-nearest-neighbor Dzyaloshinskii-Moriya interaction (DMI). Motivated by the recent progress in
the sublattice-specific control of magnetic anisotropy, we study the topological phase of magnon bands of
a honeycomb ferromagnetic monolayer and a bilayer with sublattice symmetry breaking due to the different
anisotropy energy in the presence of the DMI. We show that there is a topological phase transition between the
topological magnon insulator and the topologically trivial magnon phase driven by the change of the relative
size of the DMI and the anisotropy differences between the sublattices. The magnon thermal Hall conductivity
is proposed as an experimental probe of the magnon topology
*This work was supported by Brain Pool Plus Program through the National Research Foundation of Korea funded by the Ministry of Science and ICT (NRF2020H1D3A2A03099291), by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIT) (NRF-2021R1C1C1006273), and by the National Research Foundation of Korea funded by the Korea Government via the SRC Center for Quantum Coherence in Condensed Matter (NRF-2016R1A5A1008184).
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700