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

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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 \emph{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 should allow one to find the quantum relaxation time.
Original languageUndefined/Unknown
JournalPhys. Rev. B
StateSubmitted - Feb 1 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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