Radiation-assisted magnetotransport in two-dimensional electron gas systems: appearance of zero resistance states

TL;DR

This paper develops a semiclassical transport model to explain the emergence of zero-resistance states in microwave-irradiated two-dimensional electron gases, revealing their connection to suppression of quantum oscillations and their persistence over broad magnetic field ranges.

Contribution

It introduces a new semiclassical formalism that explains the appearance and robustness of zero-resistance states in 2DEG systems under microwave radiation, linking them to suppression of SdH oscillations.

Findings

ZRS originate from suppression of SdH oscillations under microwave radiation.

ZRS are pronounced and persist over broad magnetic field intervals.

The model aligns with experimental observations of microwave-illuminated 2DEG systems.

Abstract

Zero-Resistance States (ZRS) are normally associated with superconducting and quantum Hall phases. Experimental detection of ZRS in two-dimensional electron gas (2DEG) systems irridiated by microwave(MW) radiation in a magnetic field has been quite a surprise. We develop a semiclassical transport formalism to explain the phenomena. We find a sequence of Zero-Resistance States (ZRS) inherited from the suppression of Shubnikov-de Haas (SdH) oscillations under the influence of high-frequency and large amplitude microwave radiation. Furthermore, the ZRS are well pronounced and persist up to broad intervals of magnetic field as observed in experiments on microwave illuminated 2DEG systems.