Microwave stabilization of edge transport and zero-resistance states

TL;DR

This paper demonstrates that microwave fields can stabilize edge electron transport in a semiclassical regime, leading to zero-resistance states, thus providing a physical explanation for these phenomena beyond the quantum regime.

Contribution

It introduces a new mechanism where microwaves stabilize edge trajectories in the semiclassical regime, explaining zero-resistance states in two-dimensional electron gases.

Findings

Microwave fields stabilize edge transport in the semiclassical regime.

Zero-resistance states can occur outside the quantum regime.

Provides a physical interpretation for observed zero-resistance states.

Abstract

Edge channels play a crucial role for electron transport in two dimensional electron gas under magnetic field. It is usually thought that ballistic transport along edges occurs only in the quantum regime with low filling factors. We show that a microwave field can stabilize edge trajectories even in the semiclassical regime leading to a vanishing longitudinal resistance. This mechanism gives a clear physical interpretation for observed zero-resistance states.