How Phase-Breaking Affects Quantum Transport Through Chaotic Cavities

TL;DR

This paper studies how phase-breaking events influence electronic transport in chaotic cavities, using simulations and statistical models to match experimental results and provide insights into conductance behavior.

Contribution

It introduces a statistical framework for phase-breaking effects in chaotic cavities and provides an analytical and numerical analysis of conductance modifications.

Findings

Analytical expressions for conductance mean and variance under strong phase-breaking

Interpolation formula accurately describes conductance across phase-breaking regimes

Good agreement with recent experimental data

Abstract

We investigate the effects of phase-breaking events on electronic transport through ballistic chaotic cavities. We simulate phase-breaking by a fictitious lead connecting the cavity to a phase-randomizing reservoir and introduce a statistical description for the total scattering matrix, including the additional lead. For strong phase-breaking, the average and variance of the conductance are calculated analytically. Combining these results with those in the absence of phase-breaking, we propose an interpolation formula, show that it is an excellent description of random-matrix numerical calculations, and obtain good agreement with several recent experiments.