Resonance Features of the Conductance of Open Billiards with the Spin-Orbit Interaction

TL;DR

This paper investigates how spin-orbit interactions in open billiard systems cause additional Fano resonances in conductance, with resonance widths scaling with the fourth power of the coupling constant.

Contribution

It reveals the emergence of new Fano resonances due to Dresselhaus and Rashba interactions and quantifies their dependence on the spin-orbit coupling strength.

Findings

Additional Fano resonances appear in conductance.

Resonance widths scale with the fourth power of the spin-orbit coupling constant.

Spin-orbit interactions significantly alter transport properties.

Abstract

The transport properties of a circular billiard with attached channels, which is an open system, have been studied in the presence of the Dresselhaus and Rashba spin-orbit interactions. It has been shown that this interaction leads to the appearance of additional Fano resonances in the energy dependence of the conductance, the width of which is proportional to the fourth power of the spin-orbit coupling constant.