Polarization immunity of magnetoresistivity response under Microwave excitation

TL;DR

This paper provides a theoretical analysis explaining why the magnetoresistivity response in two-dimensional electron systems remains unaffected by the polarization sense of microwaves, including linear and circular polarizations.

Contribution

It introduces a theoretical explanation for the experimentally observed polarization immunity in magnetoresistivity responses under microwave excitation.

Findings

Resistivity oscillations are unaffected by microwave polarization sense.

Zero resistance states do not depend on the sense or direction of microwave electric field.

Theoretical model explains polarization immunity observed experimentally.

Abstract

We analyze theoretically the dependence of the microwave polarization sate and sense on the magnetoresistivity response of two-dimensional electron systems. Linear and circular polarization have been considered with different senses and directions. We discuss the polarization dependence of the longitudinal magnetoresistivity and propose an explanation for the experimentally observed polarization immunity, i.e., resistivity oscillations and zero resistance state regions are unaffected by the sense of circular polarization or by the direction of microwave electric field.