Anisotropic electron g-factor in quantum dots with spin-orbit interaction

TL;DR

This paper investigates how the electron g-factor in quantum dots varies with magnetic fields and spin-orbit interactions, revealing anisotropic behavior and phase transitions, aligning well with experimental data.

Contribution

It provides a detailed analysis of g-factor anisotropy in quantum dots considering Rashba and Dresselhaus effects across different materials and confinement regimes.

Findings

Identification of two distinct spectral phases in GaAs under perpendicular magnetic field.

Demonstration of g-factor anisotropy consistent with experimental observations.

Analysis of the interplay between magnetic fields and spin-orbit coupling in quantum dots.

Abstract

g-factor tuning of electrons in quantum dots is studied as function of in-plane and perpendicular magnetic fields for different confinements. Rashba and Dresselhaus effects are considered, and comparison is made between wide- and narrow-gap materials. The interplay between magnetic fields and intrinsic spin-orbit coupling is analyzed, with two distinct phases found in the spectrum for GaAs in perpendicular field. The anisotropy of the g-factor is reported, and good agreement with available experimental findings is obtained.