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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.
Bibliographical noteFunding 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.
© 2020 American Physical Society.
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