Conservation in High-field Quantum Transport

TL;DR

This paper reviews how microscopic conservation laws influence charge transport in high-field quantum regimes, highlighting the importance of non-equilibrium effects and interband coupling in quantum point contacts.

Contribution

It provides a concise overview of conservation principles in high-field quantum transport and discusses experimental and theoretical insights into non-linear charge dynamics.

Findings

Conservation laws are crucial in understanding high-field quantum transport.

Interband coupling effects significantly impact quantum point contact behavior.

Non-equilibrium conditions reveal deviations from linear response theory.

Abstract

We give a short overview of the role of microscopic conservation in charge transport at small scales, and at driving fields beyond the linear-response limit. As a practical example we recall the measurement and theory of interband coupling effects in a quantum point contact driven far from equilibrium.