Influence of high magnetic fields on the superconducting transition of one-dimensional Nb and MoGe nanowires

被引:92
作者
Rogachev, A [1 ]
Bollinger, AT [1 ]
Bezryadin, A [1 ]
机构
[1] Univ Illinois, Dept Phys, Urbana, IL 61801 USA
关键词
D O I
10.1103/PhysRevLett.94.017004
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The effects of a strong magnetic field on superconducting Nb and MoGe nanowires with diameter similar to10 nm have been studied. We have found that the Langer-Ambegaokar-McCumber-Halperin (LAMH) theory of thermally activated phase slips is applicable in a wide range of magnetic fields and describes well the temperature dependence of the wire resistance, over 11 orders of magnitude. The field dependence of the critical temperature, T-c, extracted from the LAMH fits is in good quantitative agreement with the theory of pair-breaking perturbations that takes into account both spin and orbital contributions. The extracted spin-orbit scattering time agrees with an estimate tau(s.o.)similar or equal totau((h) over barc/Ze(2))(4), where tau is the elastic scattering time and Z is the atomic number.
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页数:4
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