$g$-factor anisotropy in nanowire-based InAs quantum dots

TL;DR

This paper investigates how the electron g-factor varies with magnetic field orientation in InAs nanowire quantum dots, revealing a continuous range of g-factors crucial for spintronics and quantum computing.

Contribution

It provides the first detailed measurement of g-factor anisotropy in InAs nanowire quantum dots using Kondo resonance splitting.

Findings

g-factor varies between |g*|=5 and 15

g-factor depends on magnetic field orientation

continuous variation of g-factor observed

Abstract

The determination and control of the electron $g$-factor in semiconductor quantum dots (QDs) are fundamental prerequisites in modern concepts of spintronics and spin-based quantum computation. We study the dependence of the $g$-factor on the orientation of an external magnetic field in quantum dots (QDs) formed between two metallic contacts on stacking fault free InAs nanowires. We extract the $g$-factor from the splitting of Kondo resonances and find that it varies continuously in the range between $|g^*| = 5$ and 15.