Effect of spin-orbit coupling on spectral and transport properties of tubular electron gas in InAs nanowires

TL;DR

This paper investigates how spin-orbit coupling influences the spectral and transport properties of electrons in InAs nanowires, revealing effects like gap renormalization and anticrossings that impact ballistic transport.

Contribution

The study provides an exact numerical analysis of spin-orbit effects in tubular electron gases in InAs nanowires, highlighting the impact of Dresselhaus-like coupling on spectral features.

Findings

Spin-orbit coupling causes renormalization of SO-gaps.

Anticrossings appear in the subband spectrum due to SO coupling.

Transport properties are affected by these spectral modifications.

Abstract

We constructed the Hamiltonian of spin-orbit splitting for carriers of a tubular electron gas in InAs nanowires. The spectral problem is solved using an exact numerical diagonalization. It is shown that the contribution of k-linear Dresselhaus-like spin-orbit (SO) coupling leads to renormalization of so-called SO-gaps and appearance of anticrossings in subband spectrum. These features can be detected in ballistic transport.