Topological Hall conductivity of vortex and skyrmion spin textures

Journal Article · Wed May 07 04:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4860060· OSTI ID:22273934

Jalil, M. B. A.,; Ghee Tan, Seng ^[1]; Eason, Kwaku; Kong, Jian Feng ^[2]

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1. Department of Electrical and Computer Engineering, National University of Singapore, 1 Engineering Drive 3, Singapore 117576 (Singapore)
2. Data Storage Institute, Agency for Science, Technology and Research (A-STAR), DSI Building, 5 Engineering Drive 1, Singapore 117608 (Singapore)

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.

• OSTI ID: 22273934
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 17 Vol. 115; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

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