OBSERVATION OF PAIR CURRENTS IN SUPERCONDUCTOR-SEMICONDUCTOR CONTACTS

被引：289

作者：

KASTALSKY, A

KLEINSASSER, AW

GREENE, LH

BHAT, R

MILLIKEN, FP

HARBISON, JP

机构：

[1] BELLCORE,RED BANK,NJ 07701

[2] IBM CORP,THOMAS J WATSON RES CTR,DIV RES,YORKTOWN HTS,NY 10598

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.67.3026

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An excess low-voltage conductance is observed in Nb-InGaAs contacts at low temperatures and interpreted as being due to a pair current across the superconductor-semiconductor interface. This is the first observation of a pair current, a nonequilibrium manifestation of the proximity effect, in junctions having one electrode which is not a superconductor. A model is presented which accounts for the observed behavior. In addition to the pair current, it is demonstrated that these junctions exhibit excess conductance due to Andreev scattering.

引用

页码：3026 / 3029

页数：4

共 19 条

[1] SUPERCONDUCTING TUNNELING WITHOUT THE TUNNELING HAMILTONIAN
ARNOLD, GB
[J]. JOURNAL OF LOW TEMPERATURE PHYSICS, 1985, 59 (1-2) : 143 - 183
[2] PAIR-FIELD SUSCEPTIBILITY OF SUPERCONDUCTING AL-ER FILMS
ASPEN, FE
GOLDMAN, AM
[J]. JOURNAL OF LOW TEMPERATURE PHYSICS, 1981, 43 (5-6) : 559 - 589
[3] 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
[4] Ferrell R. A., 1969, Journal of Low Temperature Physics, V1, P423, DOI 10.1007/BF00628207
[5] GESHKENBEIN VB, 1988, ZH EKSP TEOR FIZ+, V67, P362
[6] APPARENT CRITICAL CURRENTS AND RF STEPS IN A 2ND-ORDER PROXIMITY-INDUCED JOSEPHSON EFFECT
HAN, SY
COHEN, LF
WOLF, EL
[J]. PHYSICAL REVIEW B, 1990, 42 (13): : 8682 - 8685
[7] EXPERIMENTS OF THE SUPERCONDUCTING PROXIMITY EFFECT BETWEEN SUPERCONDUCTOR AND SEMICONDUCTOR
HATANO, M
NISHINO, T
KAWABE, U
[J]. APPLIED PHYSICS LETTERS, 1987, 50 (01) : 52 - 54
[8] ELECTRON-TRANSPORT IN NIOBIUM-SILICON-NIOBIUM STRUCTURES
HESLINGA, DR
VANHUFFELEN, WM
KLAPWIJK, TM
[J]. IEEE TRANSACTIONS ON MAGNETICS, 1991, 27 (02) : 3264 - 3267
[9] ANALYSIS OF THE PROXIMITY-INDUCED JOSEPHSON EFFECT IN SUPERCONDUCTING-NORMAL CONTACTS
KADIN, AM
[J]. PHYSICAL REVIEW B, 1990, 41 (07): : 4072 - 4077
[10] KADIN AM, 1982, PHYS REV B, V25, P6701, DOI 10.1103/PhysRevB.25.6701

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