论文标题
二维电子气体中的各向同性导电（隐藏）量子厅条纹阶段
Isotropically conducting (hidden) quantum Hall stripe phases in a two-dimensional electron gas
论文作者
论文摘要
由Hartree-fock理论预测的量子厅条纹（QHS）阶段在基于GAAS的二维电子气体中表现为巨大抗性各向异性。在这里，我们预测了一个``隐藏''QHS相，该QHS阶段表现出\ emph {isotropic}电阻率，其值由QHS状态的密度确定，独立于Landau指数$ n $，并且与零磁场的Drude电导率成反比。在足够高的$ n $的情况下，此阶段可以使Ando-unemura-Coleridge-Zawadski-Sachrajda阶段产生，其中电阻率与$ 1/n $成正比，并与量子和运输寿命的比率成正比。对该边界的实验观察应允许人们找到量子放松时间。
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.
