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

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 01期

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.

引用

页数：4

共 33 条

[1] ABRIKOSOV AA, 1962, SOV PHYS JETP-USSR, V15, P752
[2] ABRIKOSOV AA, 1961, SOV PHYS JETP-USSR, V12, P1243
[3] Quantum suppression of superconductivity in ultrathin nanowires
Bezryadin, A
Lau, CN
Tinkham, M
[J]. NATURE, 2000, 404 (6781) : 971 - 974
[4] Effect of morphology on the superconductor-insulator transition in one-dimensional nanowires
Bollinger, AT
Rogachev, A
Remeika, M
Bezryadin, A
[J]. PHYSICAL REVIEW B, 2004, 69 (18): : 180503 - 1
[5] Paramagnetic breakdown of superconductivity in ultrasmall metallic grains
Braun, F
vonDelft, J
Ralph, DC
Tinkham, M
[J]. PHYSICAL REVIEW LETTERS, 1997, 79 (05) : 921 - 924
[6] Quantum fluctuations in thin superconducting wires of finite length -: art. no. 067007
Büchler, HP
Geshkenbein, VB
Blatter, G
[J]. PHYSICAL REVIEW LETTERS, 2004, 92 (06)
[7] Exchange fields and the finite bias tunneling anomaly in paramagnetically limited superconducting Al films
Butko, VY
Adams, PW
Aleiner, IL
[J]. PHYSICAL REVIEW LETTERS, 1999, 82 (21) : 4284 - 4287
[8] Experimental evidence of one-dimensional plasma modes in superconducting thin wires
Camarota, B
Parage, F
Balestro, F
Delsing, P
Buisson, O
[J]. PHYSICAL REVIEW LETTERS, 2001, 86 (03) : 480 - 483
[9] QUANTUM DECAY OF ONE-DIMENSIONAL SUPERCURRENT - ROLE OF ELECTROMAGNETIC-FIELD
DUAN, JM
[J]. PHYSICAL REVIEW LETTERS, 1995, 74 (25) : 5128 - 5131
[10] EVIDENCE FOR MACROSCOPIC QUANTUM TUNNELING IN ONE-DIMENSIONAL SUPERCONDUCTORS
GIORDANO, N
[J]. PHYSICAL REVIEW LETTERS, 1988, 61 (18) : 2137 - 2140

← 1 2 3 4 →