Quantum tunneling of the interfaces between normal-metal and superconducting regions of a type-I Pb superconductor

被引：8

作者：

Chudnovsky, E. M. ^{[1
,2
]}

Velez, S. ^{[2
,3
]}

Garcia-Santiago, A. ^{[2
,3
]}

Hernandez, J. M. ^{[2
,3
]}

Tejada, J. ^{[2
,3
]}

机构：

[1] CUNY, Lehman Coll, Dept Phys, Bronx, NY 10468 USA

[2] Univ Barcelona, Fac Fis, Dept Fis Fonamental, ES-08028 Barcelona, Spain

[3] Univ Barcelona, Inst Nanociencia & Nanotecnol IN2UB, ES-08028 Barcelona, Spain

来源：

PHYSICAL REVIEW B | 2011年 / 83卷 / 06期

关键词：

HIGH-TEMPERATURE SUPERCONDUCTORS; VORTICES; VORTEX; CREEP; MOTION; LINES;

D O I：

10.1103/PhysRevB.83.064507

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Evidence of a nonthermal magnetic relaxation in the intermediate state of a type-I superconductor is presented. It is attributed to quantum tunneling of interfaces separating normal and superconducting regions. Tunneling barriers are estimated, and the temperature of the crossover from the thermal to the quantum regime is obtained from the Caldeira-Leggett theory. Comparison between theory and experiment points to tunneling of interface segments of a size comparable to the coherence length, by steps of the order of 1 nm.

引用

页数：4

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