Spin-dependent hole quantum transport in Aharonov-Bohm ring structure: possible schemes for spin filter

TL;DR

This paper investigates spin-dependent quantum transport in a hole-based Aharonov-Bohm ring, revealing spin separation in conductance and proposing schemes for spin filtering leveraging interference effects.

Contribution

It introduces the study of spin-dependent AB effects in hole systems and proposes novel schemes for spin filtering based on interference phenomena.

Findings

Conductance shows spin-separated AB oscillations.

Presence of both heavy and light holes affects transport.

Proposed schemes for spin filtering using interference.

Abstract

We study the Aharonov-Bohm (AB) effect in two-dimensional mesoscopic frame in hole systems. We show that differing from the AB effect in electron systems, due to the presence of both the heavy hole and the light hole, the conductances not only show the normal spin-unresolved AB oscillations, but also become spin-separated. Some schemes for spin filter based on the abundant interference characteristics are proposed.