Dynamic generation of spin orbit coupling

TL;DR

This paper introduces a novel mechanism for dynamically generating spin-orbit coupling in strongly correlated, non-relativistic systems through fermi surface instabilities, enabling tunable spin-orbit effects beyond relativistic origins.

Contribution

It proposes a new non-relativistic, dynamic mechanism for spin-orbit coupling arising from fermi surface instabilities, expanding the understanding of spin-orbit effects in correlated materials.

Findings

Spin-orbit coupling can be generated dynamically in non-relativistic systems.

Various forms of spin-orbit coupling emerge from fermi surface instabilities.

Magnitudes of spin-orbit coupling can be tuned by temperature or quantum parameters.

Abstract

Spin-orbit coupling plays an important role in determining the properties of solids, and is crucial for spintronics device applications. Conventional spin-orbit coupling arises microscopically from relativistic effects described by the Dirac equation, and is described as a single particle band effect. In this work, we propose a new mechanism in which spin-orbit coupling can be generated dynamically in strongly correlated, non-relativistic systems as the result of fermi surface instabilities in higher angular momentum channels. Various known forms of spin-orbit couplings can emerge in these new phases, and their magnitudes can be continuously tuned by temperature or other quantum parameters.