Radiation induced zero-resistance states: a dressed electronic structure effect

TL;DR

This paper proposes that radiation-induced zero-resistance states in a 2D electron gas are caused by changes in the electronic structure dressed by photons, offering a new interpretation of observed magnetoresistance oscillations.

Contribution

It introduces a theoretical framework analyzing the dressed electronic structure under microwave radiation to explain zero-resistance states.

Findings

Dressed electronic structure significantly alters under microwave irradiation.

Magnetoresistance oscillations are interpreted as persistent-current-like effects.

The approach provides a new perspective on radiation-induced zero-resistance phenomena.

Abstract

Recent results on magnetoresistance in a two dimensional electron gas under crossed magnetic and microwave fields show a new class of oscillations, suggesting a new kind of zero-resistance states. A complete understanding of the effect is still lacking. We consider the problem from the point of view of the electronic structure dressed by photons due to a in plane linearly polarized ac field. The dramatic changes in the dressed electronic structure lead to a interpretation of the new magnetoresistance oscillations as a persistent-current like effect, induced by the radiation field.