Isotropically conducting (hidden) quantum Hall stripe phases in a twodimensional electron gas
Abstract
Quantum Hall stripe (QHS) phases, predicted by the HartreeFock theory, are manifested in GaAsbased twodimensional 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 AndoUnemura/ColeridgeZawadskiSachrajda 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.
 Publication:

Physical Review B
 Pub Date:
 April 2020
 DOI:
 10.1103/PhysRevB.101.161302
 arXiv:
 arXiv:2002.00154
 Bibcode:
 2020PhRvB.101p1302H
 Keywords:

 Condensed Matter  Mesoscale and Nanoscale Physics
 EPrint:
 5 pages, 3 figures