Isotropically conducting (hidden) quantum Hall stripe phases in a two-dimensional electron gas

Research output: Contribution to journalArticle

Abstract

Quantum Hall stripe (QHS) phases, predicted by the Hartree-Fock theory, are manifested in GaAs-based two-dimensional electron gases as giant resistance anisotropies. Here, we predict a "hidden" QHS phase which exhibits isotropic resistivity whose value, determined by the density of states of QHS, is independent of the Landau index N and is inversely proportional to the Drude conductivity at zero magnetic field. At high enough N, this phase yields to an Ando-Unemura/Coleridge-Zawadski-Sachrajda phase in which the resistivity is proportional to 1/N and to the ratio of quantum and transport lifetimes. Experimental observation of this border can provide an alternative way to obtain quantum relaxation time.

Original languageEnglish (US)
Article number161302
JournalPhysical Review B
Volume101
Issue number16
DOIs
StatePublished - Apr 15 2020

Bibliographical note

5 pages, 3 figures

Keywords

  • cond-mat.mes-hall

How much support was provided by MRSEC?

  • Primary

Reporting period for MRSEC

  • Period 6

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