THERMAL FLUCTUATIONS AND CHARGE-DENSITY-WAVE DEPINNING IN NBSE3 - EVIDENCE FOR PHASE CREEP

被引：28

作者：

MCCARTEN, J ^{[1
]}

MAHER, M ^{[1
]}

ADELMAN, TL ^{[1
]}

DICARLO, DA ^{[1
]}

THORNE, RE ^{[1
]}

机构：

[1] CORNELL UNIV,CTR MAT SCI,ITHACA,NY 14853

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.43.6800

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied the temperature dependence of the threshold electric field E(T) for charge-density-wave (CDW) depinning in NbSe3. At temperatures well below the Peierls transition T(P), the fractional increase in E(T) with decreasing temperature is independent of crystal thickness. In very thin crystals near T(P), the sharp threshold vanishes and nonlinear conduction occurs at arbitrarily small fields. A weak-pinning analysis suggests (1) that E(T)'s low-temperature increase may arise from a temperature dependence of the effective condensate density, and (2) that E(T)'s vanishing in thin crystals is due to thermally assisted depinning of the CDW.

引用

页码：6800 / 6803

页数：4

共 20 条

[11] THERMAL FLUCTUATIONS OF THE ORDER PARAMETER IN CHARGE-DENSITY WAVES [J].