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

Yi Huang; M. Sammon; M. A. Zudov; B. I. Shklovskii

doi:10.1103/PhysRevB.101.161302

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

Yi Huang, M. Sammon, M. A. Zudov, B. I. Shklovskii

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4 Scopus citations

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 language	English (US)
Article number	161302
Journal	Physical Review B
Volume	101
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevB.101.161302
State	Published - Apr 15 2020

Bibliographical note

Funding Information:
We thank I. Dmitriev, M. Fogler, and X. Fu for valuable discussions. Calculations by Y.H. and M.S. were supported primarily by the NSF through the University of Minnesota MRSEC under Award No. DMR-1420013. M.Z. acknowledges support from the US Department of Energy, Office of Science, Basic Energy Sciences, under Award No. DE-SC0002567.

Publisher Copyright:
© 2020 American Physical Society.

Keywords

cond-mat.mes-hall

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10.1103/PhysRevB.101.161302

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

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.",

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AU - Sammon, M.

AU - Zudov, M. A.

AU - Shklovskii, B. I.

N1 - Funding Information: We thank I. Dmitriev, M. Fogler, and X. Fu for valuable discussions. Calculations by Y.H. and M.S. were supported primarily by the NSF through the University of Minnesota MRSEC under Award No. DMR-1420013. M.Z. acknowledges support from the US Department of Energy, Office of Science, Basic Energy Sciences, under Award No. DE-SC0002567. Publisher Copyright: © 2020 American Physical Society.

PY - 2020/4/15

Y1 - 2020/4/15

N2 - 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.

AB - 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.

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

Abstract

Bibliographical note

Keywords

MRSEC Support

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University of Minnesota MRSEC (DMR-1420013)

MRSEC IRG-2: Sustainable Nanocrystal Materials

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

Abstract

Bibliographical note

Keywords

MRSEC Support

Publisher link

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Other files and links

Fingerprint

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University of Minnesota MRSEC (DMR-1420013)

MRSEC IRG-2: Sustainable Nanocrystal Materials

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