Nonperturbative Topological Model of Synergistic Phase of 2D Electron Gas Induced by Microwave Excitation

TL;DR

This paper introduces a nonperturbative topological model explaining the formation of zero-resistance states in high mobility 2D electron gases under microwave radiation, emphasizing the role of strong disorder and correlations.

Contribution

It presents a novel microscopic topological filamentary model that captures the synergistic phase induced by microwave excitation in 2DES, incorporating strong correlations and nanoscopic phase separation.

Findings

Exact description of zero-resistance states using the topological model

Identification of strong disorder as stabilizing factor

Revealing novel features from correlations and phase separation

Abstract

The synergistic formation of ``zero'' (exponentially small or thermally activated) resistance states (ESRS) in high mobility two-dimensional electron systems (2DES) in a static magnetic field B and exposed to strong microwave radiation has attracted great interest. Strong (glassy) disorder apparently stabilizes the new synergistic phase, which can be exactly described by a nonperturbative (nonpolynomial) microscopic topological filamentary model. The model contains many novel features that arise from strong correlations, nanoscopic phase separation, and quasi-one dimensional back scattering.