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Title: Topological Hall conductivity of vortex and skyrmion spin textures

We analyze the topological Hall conductivity experienced by conduction electrons whose spins are strongly coupled to axially symmetric spin textures, such as magnetic vortex and skyrmion of types I and II, theoretically by gauge theory, and numerically via micromagnetic simulations. The numerical results are in agreement with the theoretical predictions. Divergence between the two is seen when the vortex/skyrmion core radius is comparable or larger than the element size, and when the skyrmion configuration breaks down at high Dzyaloshinskii-Moriya interaction strength.
Authors:
;  [1] ;  [2] ; ;  [3]
  1. Department of Electrical and Computer Engineering, National University of Singapore, 1 Engineering Drive 3, Singapore 117576 (Singapore)
  2. (A-STAR), DSI Building, 5 Engineering Drive 1, Singapore 117608 (Singapore)
  3. Data Storage Institute, Agency for Science, Technology and Research (A-STAR), DSI Building, 5 Engineering Drive 1, Singapore 117608 (Singapore)
Publication Date:
OSTI Identifier:
22273934
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; AXIAL SYMMETRY; COMPARATIVE EVALUATIONS; ELECTRIC CONDUCTIVITY; ELECTRONS; GAUGE INVARIANCE; HALL EFFECT; MAGNETIC MATERIALS; MAGNETISM; SIMULATION; SPIN; TEXTURE; TOPOLOGY; VORTICES