Disordered Quantum smectics

Details Disordered Quantum smectics Disordered Quantum smectics

2002-07-02

arxiv.org/abs/cond-mat/0207079v1

Europhys. Lett. 63 p. 440 (2003)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, one eps figure, revtex 4

Scientific paper

10.1209/epl/i2003-00535-4

We study the impurity pinning of the Quantum Hall (QH) smectic state arising in two dimensional electron systems in high Landau levels. We use replicas and a Gaussian Variational method to deal with the disorder. The pinned quantum smectic exhibits very anisotropic behaviour, with density correlations along the direction of the stripes manifesting a Bragg-Glass type behaviour i.e., quasi long range order whereas those in the transverse direction are infra red divergent. We calculate the dynamical conductivity along the stripe direction and find a wavelength dependent pinning peak.

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