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Type: Artigo de periódico
Title: Charge ordering in amorphous WOx films
Author: Kopelevich, Y
da Silva, RR
Rougier, A
Luk'yanchuk, IA
Abstract: We report on the observation of highly anisotropic viscous electronic conducting phase in amorphous WO1.55 films that occurs below a current (I)- and frequency (f)-dependent temperature T* (I, f). At T < T*(I, f) the rotational symmetry of randomly disordered electronic background is broken leading to the appearance of mutually perpendicular metallic- and insulating-like states. A rich dynamic behavior of the electronic matter occurring at T < T* (I, f) provides evidence for an interplay between pinning effects and electron-electron interactions. The results suggest a dynamic crystallization of the disordered electronic matter, viz. formation of sliding Wigner crystal, as well as the occurrence of quantum liquid-like crystal or stripe phase at low drives. (c) 2007 Elsevier B.V. All rights reserved.
Country: Holanda
Editor: Elsevier Science Bv
Citation: Physics Letters A. Elsevier Science Bv, v. 368, n. 5, n. 419, n. 422, 2007.
Rights: fechado
Identifier DOI: 10.1016/j.physleta.2007.04.046
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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