Time of nucleation of phase-slip centers in YBa2Cu3O7 superconducting bridges

被引：57

作者：

Jelila, FS

Maneval, JP

Ladan, FR

Chibane, F

Marie-de-Ficquelmont, A

Mechin, L

Villegier, JC

Aprili, M

Lesueur, J

机构：

[1] Ecole Normale Super, Dept Phys, F-75231 Paris 5, France

[2] CEA, DRFMC, SPSMS, Grenoble 9, France

[3] Univ Paris Sud, CSNSM, F-90145 Orsay, France

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.81.1933

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Narrow YBa2Cu3O7 films, excited by pulses of supercritical current, had their nanosecond electric response monitored in zero applied magnetic field. Delayed voltage steps plus constant differential resistance, characteristic of phase-slip centers (PSC), are observed at all temperatures. The duration of the initial zero voltage state is well fit by Ginzburg-Landau based theories, with a gap relaxation time controlled by phonon escape. At higher levels of excitation, PSC's give birth to slowly spreading normal hot spots.

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页码：1933 / 1936

页数：4

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