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arXiv · 2212.02812

Topological Hall effect induced by classical large-spin background: $su(2)$ path-integral approach

Kaushal K. Kesharpu·Evgenii A. Kochetov·Alvaro Ferraz
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Abstract

The $su(2)$ coherent-state path-integral technique is employed to study lattice electrons strongly coupled to a quantum spin background. In the large-spin limit it is replaced with its classical counterpart that breaks the time-reversal symmetry. The fermions propagating through a classical large-spin texture may then exhibit the topological Hall effect which arises even for a zero scalar spin chirality of the underlying spin background.

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Kaushal K. Kesharpu, Evgenii A. Kochetov, Alvaro Ferraz. 2022-12-06. Topological Hall effect induced by classical large-spin background: $su(2)$ path-integral approach. https://doi.org/10.1103/physrevb.107.155146

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