Oscillatory and Vanishing Resistance States in Microwave Irradiated 2D Electron Systems

TL;DR

This paper reviews recent experiments on microwave-induced oscillations and zero-resistance states in high-mobility 2D electron and hole systems, highlighting new multi-photon phenomena and suppression of quantum oscillations.

Contribution

It reports novel zero-resistance states linked to multi-photon processes and the microwave suppression of Shubnikov-de Haas oscillations in 2D systems.

Findings

Zero-resistance states associated with multi-photon processes.

Suppression of Shubnikov-de Haas oscillations by microwaves.

Microwave photoconductivity observed in 2D hole systems.

Abstract

Giant-amplitude oscillations in dc magnetoresistance of a high-mobility two-dimensional electron system can be induced by millimeterwave irradiations, leading to zero-resistance states at the oscillation minima. Following a brief overview of the now well-known phenomenon, this paper reports on aspects of more recent experiments on the subject. These are: new zero-resistance states associated with multi-photon processes; suppression of Shubnikov-de Haas oscillations by high-frequency microwaves; and microwave photoconductivity of a high-mobility two-dimensional hole system.