Hall magnetoresistivity response under Microwave excitation revisited

TL;DR

This paper presents a theoretical model explaining how microwave radiation modifies Hall magnetoresistivity in high mobility 2D electron systems, linking changes in Hall resistivity to alterations in diagonal resistivity.

Contribution

The study introduces a model that explains microwave-induced Hall resistivity modifications based on changes in diagonal resistivity, providing insight into observed oscillations and zero-resistance states.

Findings

Microwave radiation causes periodic reduction in Hall resistivity.

Changes in Hall resistivity are linked to increases in diagonal resistivity.

The model aligns with experimental observations of resistivity oscillations.

Abstract

We theoretically analyzed the microwave-induced modification of the Hall magnetoresistivity in high mobility two-dimensional electron systems. These systems present diagonal magnetoresistivity oscillations and zero-resistance states when are subjected to microwave radiation. The most surprising modification of the Hall magnetoresistivity is a periodic reduction which correlates with a periodic increase in the diagonal resistivity. We present a model that explains the experimental results considering that radiation affects directly only the diagonal resistivity and the observed Hall resistivity changes are coming from the tensor relationship between both of them.