This article is cited in 20 papers

CONDENSED MATTER

Impurity-induced stabilization of Luttinger liquid in quasi-one-dimensional conductors

S. N. Artemenko

Institute for Radioengineering and Electronics RAS, 125009 Moscow, Russia

Abstract: It is shown theoretically that the Luttinger liquid can exist in quasi-one-dimensional conductors in the presence of impurities in a form of a collection of bounded Luttinger liquids. The conclusion is based upon the observation by Kane and Fisher that a local impurity potential in Luttinger liquid acts, at low energies, as an infinite barrier. This leads to a discrete spectrum of collective charge and spin density fluctuations, so that interchain hopping can be considered as a small parameter at temperatures below the minimum excitation energy of the collective modes. The results are compared with recent experimental observation of a Luttinger-liquid-like behavior in thin NbSe$_3$ and TaS$_3$ wires.

PACS: 71.10.-w, 71.27.+a, 71.45.Lr

Received: 09.12.2003

Language: English

 English version: Journal of Experimental and Theoretical Physics Letters, 2004, 79:6, 277–281

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