Correlated quantization of supercurrent and conductance in a superconducting quantum point contact -: art. no. 174502

被引：28
作者：
Bauch, T [1 ]
Hürfeld, E
Krasnov, VM
Delsing, P
Takayanagi, H
Akazaki, T
机构：
[1] Chalmers, MC2, S-41296 Gothenburg, Sweden
[2] NTT Corp, Basic Res Labs, Kanagawa 24301, Japan
来源：
PHYSICAL REVIEW B | 2005年 / 71卷 / 17期
关键词：
D O I：
10.1103/PhysRevB.71.174502
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have measured the supercurrent and conductance of a superconducting quantum point contact in a superconductor two-dimensional electron gas-superconductor Josephson junction. We observe that the supercurrent and conductance change stepwise in a correlated manner as a function of the gate voltage. This was achieved by simultaneous measurement of the supercurrent and conductance at high bias from the same current voltage characteristic.
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页数：5
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共 18 条
  • [1] AKAZAKI T, 1995, JPN J APPL PHYS PT 1, V34, P6977
  • [2] VOLTAGE DUE TO THERMAL NOISE IN DC JOSEPHSON EFFECT
    AMBEGAOKAR, V
    HALPERIN, BI
    [J]. PHYSICAL REVIEW LETTERS, 1969, 22 (25) : 1364 - +
  • [3] [Anonymous], 1978, SOV J LOW TEMP PHYS
  • [4] JOSEPHSON CURRENT THROUGH A SUPERCONDUCTING QUANTUM POINT CONTACT SHORTER THAN THE COHERENCE LENGTH
    BEENAKKER, CWJ
    VANHOUTEN, H
    [J]. PHYSICAL REVIEW LETTERS, 1991, 66 (23) : 3056 - 3059
  • [5] Comparison of cryogenic filters for use in single electronics experiments
    Bladh, K
    Gunnarsson, D
    Hürfeld, E
    Devi, S
    Kristoffersson, C
    Smålander, B
    Pehrson, S
    Claeson, T
    Delsing, P
    Taslakov, M
    [J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 2003, 74 (03) : 1323 - 1327
  • [6] TRANSITION FROM METALLIC TO TUNNELING REGIMES IN SUPERCONDUCTING MICRO-CONSTRICTIONS - EXCESS CURRENT, CHARGE IMBALANCE, AND SUPER-CURRENT CONVERSION
    BLONDER, GE
    TINKHAM, M
    KLAPWIJK, TM
    [J]. PHYSICAL REVIEW B, 1982, 25 (07): : 4515 - 4532
  • [7] Supercurrent quantization in narrow-channel superconductor-normal-metal-superconductor junctions
    Chtchelkatchev, NM
    Lesovik, GB
    Blatter, G
    [J]. PHYSICAL REVIEW B, 2000, 62 (05): : 3559 - 3564
  • [8] THEORY OF QUANTUM CONDUCTION OF SUPERCURRENT THROUGH A CONSTRICTION
    FURUSAKI, A
    TAKAYANAGI, H
    TSUKADA, M
    [J]. PHYSICAL REVIEW LETTERS, 1991, 67 (01) : 132 - 135
  • [9] JOSEPHSON EFFECT OF THE SUPERCONDUCTING QUANTUM POINT CONTACT
    FURUSAKI, A
    TAKAYANAGI, H
    TSUKADA, M
    [J]. PHYSICAL REVIEW B, 1992, 45 (18) : 10563 - 10575
  • [10] SPATIAL VARIATION OF CURRENTS AND FIELDS DUE TO LOCALIZED SCATTERERS IN METALLIC CONDUCTION
    LANDAUER, R
    [J]. IBM JOURNAL OF RESEARCH AND DEVELOPMENT, 1957, 1 (03) : 223 - 231
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