Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session B40: Topological Textures in Itinerant Magnets
11:30 AM–2:30 PM,
Monday, March 15, 2021
Sponsoring
Units:
GMAG DMP
Chair: Sergey Pershoguba, Yale University
Abstract: B40.00010 : Skyrmion size dependence of the topological Hall effect: A real-space calculation
1:42 PM–1:54 PM
Live
Presenter:
Akira Matsui
(Department of Applied Physics, University of Tokyo)
Authors:
Akira Matsui
(Department of Applied Physics, University of Tokyo)
Takuya Nomoto
(Department of Applied Physics, University of Tokyo)
Ryotaro Arita
(Department of Applied Physics, University of Tokyo)
In this study, we numerically investigate THE in systems with various skyrmion sizes. We exploit kernel polynomial method to overcome the difficulty of the growing computational cost for larger skyrmions. Changing the skyrmion unit cells from 4 x 4 to 96 x 96, we numerically investigate the crossover between the two regimes described by the reciprocal space Berry curvature and the real space counterpart.
[1] A. Neubauer et al., PRL 102 186602 (2009)
[2] M. Hirschberger et al., PRL 125 076602 (2020)
[3] S. Zhang et al., PRB 101 024420 (2020)
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