Superconducting properties of polycrystalline Nb nanowires templated by carbon nanotubes

被引：94

作者：

Rogachev, A ^{[1
]}

Bezryadin, A ^{[1
]}

机构：

[1] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

来源：

APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 03期

关键词：

D O I：

10.1063/1.1592313

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Continuous Nb wires, 7-15 nm in diameter, have been fabricated by sputter-coating single fluorinated carbon nanotubes. Transmission electron microscopy revealed that the wires are polycrystalline, having grain sizes of about 5 nm. The critical current of wires thicker than similar to12 nm is very high (10(7) A/cm(2)) and comparable to the expected depairing current. The resistance versus temperature curves measured down to 0.3 K are well described by the Langer-Ambegaokar-McCumber-Halperin theory of thermally activated phase slips. Quantum phase slips are suppressed. (C) 2003 American Institute of Physics.

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页码：512 / 514

页数：3

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