Stretched-Exponential Dielectric Relaxation in a Charge-Density-Wave System

G. Kriza, Mihã

Research output: Contribution to journalArticle

106 Citations (Scopus)

Abstract

The relaxation of the electric polarization is investigated in the charge-density-wave compound K0.3MoO3. Direct measurements of discharge current in the time interval of 10-5 to 103 s reveal a stretched exponential law for the time decay of polarization: P=P0exp[-{t(T)}1-n], where both the initial polarization, P0, and the exponent (1-n=0.7) are temperature independent. The time scale of the process indicates temperature activation with an activation energy equal to the single-particle Peierls gap. The glassy relaxation of randomly pinned charge-density waves is compared with recent theories and experiments on spin-glasses.

Original languageEnglish
Pages (from-to)2529-2532
Number of pages4
JournalPhysical review letters
Volume56
Issue number23
DOIs
Publication statusPublished - Jan 1 1986

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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