Temporally ordered collective creep and dynamic transition in the charge-density-wave conductor NbSe3

被引：42
|
作者：
Lemay, SG
Thorne, RE
Li, Y
Brock, JD
机构：
[1] Cornell Univ, Atom & Solid State Phys Lab, Ithaca, NY 14853 USA
[2] Cornell Univ, Sch Appl & Engn Phys, Ithaca, NY 14853 USA
来源：
PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 14期
关键词：
D O I：
10.1103/PhysRevLett.83.2793
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have observed an unusual form of creep at low temperatures in the charge-density-wave (CDW) conductor NbSe3. This creep develops when CDW motion becomes limited by thermally activated phase advance past individual impurities, demonstrating the importance of local pinning and related short-length-scale dynamics. Unlike in vortex lattices, elastic collective dynamics on longer length scales results in temporally ordered motion and a finite threshold field. A first-order dynamic phase transition from deep to high-velocity sliding produces "switching" in the velocity-field characteristic.
引用
收藏
页码：2793 / 2796
页数：4
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