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arXiv · 1903.02927

Chiral spin ordering of electron gas in solids with broken time reversal symmetry

K. S. Denisov·I. V. Rozhansky·N. S. Averkiev·E. Lahderanta
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Abstract

In this work we manifest that an electrostatic disorder in conducting systems with broken time reversal symmetry universally leads to a chiral ordering of the electron gas giving rise to skyrmion-like textures in spatial distribution of the electron spin density. We describe a microscopic mechanism underlying the formation of the equilibrium chiral spin textures in two-dimensional systems with spin-orbit interaction and exchange spin splitting. We have obtained analytical expressions for spin-density response functions and have analyzed both local and non-local spin response to electrostatic perturbations for systems with parabolic-like and Dirac electron spectra. With the proposed theory we come up with a concept of controlling spin chirality by electrical means.

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K. S. Denisov, I. V. Rozhansky, N. S. Averkiev, E. Lahderanta. 2019-03-07. Chiral spin ordering of electron gas in solids with broken time reversal symmetry. https://arxiv.org/abs/1903.02927

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