Transport properties in high Landau levels We study the effects of disorder on the quantum Hall stripe phases in half-filled Landau levels using exact numerical diagonalization. We show that, in the presence of weak disorder, a compressible, striped charge density wave, becomes the true ground state. The projected electron density profile resembles that of a smectic liquid. With increasing disorder strength W, we find that there exists a critical value, , where a transition/crossover to an isotropic phase with strong local electron density of states are qualitatively distinguishable in these two phases and help elucidate the nature of the transition.
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