Interplay between Zeeman interaction and spin-orbit coupling in a two-dimensional semiconductor system

TL;DR

This paper investigates how Zeeman interaction and spin-orbit coupling influence the electronic properties of a two-dimensional semiconductor system under magnetic fields, revealing spin-dependent effects on cyclotron frequency and gyromagnetic factors.

Contribution

It provides a theoretical analysis of the combined effects of Zeeman and spin-orbit interactions, highlighting their impact on effective magnetic parameters in 2D semiconductors.

Findings

Magnetic field induces spin-dependent cyclotron frequency.

In-plane magnetic fields cause anisotropic gyromagnetic factors.

Interplay affects electron dynamics in 2D semiconductor systems.

Abstract

We analyse the interplay between Dresselhaus, Bychkov-Rashba, and Zeeman interactions in a two-dimensional semiconductor quantum system under the action of a magnetic field. When a vertical magnetic field is considered, we predict that the interplay results in an effective cyclotron frequency that depends on a spin-dependent contribution. For in-plane magnetic fields, we found that the interplay induces an anisotropic effective gyromagnetic factor that depends on the orientation of the applied field as well as on the orientation of the electron momentum.