Toroidal Scattering and Nonreciprocal Transport by Magnetic Impurities

Abstract

We propose the second-order response of metals in an electric field induced by magnetic impurities which locally break inversion symmetry. The impurities with toroidal moments scatter conduction electrons in the presence of the spin-orbit coupling, leading to nonreciprocal response. This mechanism is ubiquitous when a magnetic impurity is placed off an inversion center such as an interstitial site and a surface of a two-dimensional system.

2 pages, 1 figure

References in corpus (2)

• Anomalous Hall effect in 2D Dirac band: link between Kubo-Streda formula and semiclassical Boltzmann equation approach
• Towards a microscopic theory of toroidal moments in bulk periodic crystals

Cited by in corpus (4)

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• Magnetoelectric control of spin helicity and nonreciprocal charge transport in a multiferroic metal
• Nanosculpted 3D helices of a magnetic Weyl semimetal with switchable nonreciprocity