International Workshop on Electronic Crystals
S. Brazovskii, P. Monceau and N. Kirova
J. Phys. IV France 131 (2005) 179-182
DOI: 10.1051/jp4:2005131043

Coulombian disorder in Charge Density Waves

A. Rosso¹, E. Orignac², R. Chitra³ and T. Giamarchi<sup>4

1</sup>  Laboratoire de Physique Théorique et Modèles Statistiques, CNRS UMR 8626, Bât. 100, Université Paris-Sud, 91405 Orsay Cedex, France
²  Laboratoire de Physique Théorique de l'École Normale Supérieure, CNRS UMR 8549, 24 rue Lhomond, 75231 Paris Cedex 05, France
³  Laboratoire de Physique Théorique de la Matière Condensée, CNRS UMR 7600, Université de Pierre et Marie Curie, 4 place Jussieu, 75252 Paris Cedex 05, France
⁴  Université de Genève, DPMC, 24 quai Ernest Ansermet, 1211 Genève 4, Switzerland

Abstract
When unscreened charged impurities are introduced in charge density wave system the long wavelength component of the disorder is long ranged and dominates static correlation functions. We calculate the x-ray intensity and find that it is identical to the one produced by thermal fluctuations in a disorder-free smectic-A. We suggest that this effect could be observed in the blue bronze material K_0.3MoO₃ doped with charged impurities such as Vanadium.

© EDP Sciences 2005