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

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.

SUBMITTER: Denisov KS

PROVIDER: S-EPMC6658505 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature

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

Denisov K S KS Rozhansky I V IV Averkiev N S NS Lähderanta E E

Scientific reports 20190725 1

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-de ...[more]

PMID: 31346225

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