Hyperfine-driven persistent currents in mesoscopic rings based on a 2D electron gas with Rashba spin-orbit interaction

TL;DR

This paper develops a detailed theoretical model for hyperfine-driven persistent currents in mesoscopic 2D electron gas rings, highlighting the roles of hyperfine interaction, spin-orbit coupling, and Berry phase without external magnetic fields.

Contribution

It introduces a comprehensive theory explaining how hyperfine interaction can induce persistent currents in mesoscopic rings with spin-orbit coupling, without external magnetic fields.

Findings

Persistent currents can be generated solely by hyperfine interactions.

Spin-orbit coupling and Berry phase are crucial for current emergence.

The theory predicts measurable effects in mesoscopic ring experiments.

Abstract

We present a detailed theory of induced persistent current produced by hyperfine interaction in mesoscopic rings based on a 2D-electron (hole) gas in the absence of external magnetic field. The persistent current emerges due to combined action of the hyperfine interaction of charge carriers with polarized nuclei, spin-orbit interaction and Berry phase.