Orbital Effects of In-Plane Magnetic Fields Probed by Mesoscopic Conductance Fluctuations

TL;DR

This paper investigates how in-plane magnetic fields affect the electron dispersion in quantum dots by analyzing conductance fluctuations, revealing changes in effective mass and symmetry breaking, supported by new theoretical insights.

Contribution

It introduces a new theoretical framework to quantify the effects of in-plane magnetic fields on electron dispersion in quantum dots, validated by experimental data.

Findings

In-plane magnetic fields alter the effective mass of electrons.

Symmetry breaking in electron dispersion is quantitatively characterized.

Good agreement between theory and experimental measurements is achieved.

Abstract

We use the high sensitivity to magnetic flux of mesoscopic conductance fluctuations in large quantum dots to investigate changes in the two-dimensional electron dispersion caused by an in-plane magnetic field. In particular, changes in effective mass and the breaking of momentum reversal symmetry in the electron dispersion are extracted quantitatively from correlations of conductance fluctuations. New theory is presented, and good agreement between theory and experiment is found.