Quantum phase slips in superconducting nanowires

被引：303

作者：

Lau, CN ^{[1
]}

Markovic, N ^{[1
]}

Bockrath, M ^{[1
]}

Bezryadin, A ^{[1
]}

Tinkham, M ^{[1
]}

机构：

[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.87.217003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured the resistance vs temperature of more than 20 superconducting nanowires with nominal widths ranging from 10 to 22 mn and lengths from 100 nm to 1 mum. With decreasing cross-sectional areas, the wires display increasingly broad resistive transitions. The data are in very good agreement with a model that includes both thermally activated phase slips close to T-c and quantum phase slips (QPS) at low temperatures, but disagree with an earlier model based on a critical value of R-N/R-q. Our measurements provide strong evidence for QPS in thin superconducting wires.

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页码：217003 / 1

页数：4

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