Coherent low-energy charge transport in a diffusive S-N-S junction

被引：63

作者：

Dubos, P ^{[1
]}

Courtois, H ^{[1
]}

Buisson, O ^{[1
]}

Pannetier, B ^{[1
]}

机构：

[1] Univ Grenoble 1, CNRS, Ctr Rech Tres Basses Temp, F-38042 Grenoble, France

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.87.206801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied the current-voltage characteristics of diffusive mesoscopic Nb-Cu-Nb Josephson junctions with highly transparent Nb-Cu interfaces. We consider the low-voltage and high-temperature regime eV < <epsilon>(c) < k(B)T, where <epsilon>(c) is the Thouless energy. The observed excess current as well as the observed subharmonic Shapiro steps under microwave irradiation suggest the occurrence of low-energy coherent multiple Andreev reflection.

引用

页码：206801 / 1

页数：4

共 24 条

[1]

[Anonymous], 1991, Dynamics of Josephson Junctions and Circuits

[2]

[Anonymous], 1978, SOV J LOW TEMP PHYS

[3] Nonequilibrium Josephson-like effects in wide mesoscopic SNS junctions [J].

Argaman, N .

SUPERLATTICES AND MICROSTRUCTURES, 1999, 25 (5-6) :861-875

[4]

ARTEMENKO SN, 1979, ZH EKSP TEOR FIZ, V49, P924

[5] AC JOSEPHSON EFFECT IN A SINGLE QUANTUM CHANNEL [J].

AVERIN, D ;

BARDAS, A .

PHYSICAL REVIEW LETTERS, 1995, 75 (09) :1831-1834

[6] Long-range coherence in a mesoscopic metal near a superconducting interface [J].

Courtois, H ;

Gandit, P ;

Mailly, D ;

Pannetier, B .

PHYSICAL REVIEW LETTERS, 1996, 76 (01) :130-133

[7] Hamiltonian approach to the transport properties of superconducting quantum point [J].

Cuevas, JC ;

MartinRodero, A ;

Yeyati, AL .

PHYSICAL REVIEW B, 1996, 54 (10) :7366-7379

[8] Thermostable trilayer resist for niobium lift-off [J].

Dubos, P ;

Charlat, P ;

Crozes, T ;

Paniez, P ;

Pannetier, B .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 2000, 18 (01) :122-126

[9] Josephson critical current in a long mesoscopic S-N-S junction -: art. no. 064502 [J].

Dubos, P ;

Courtois, H ;

Pannetier, B ;

Wilhelm, FK ;

Zaikin, AD ;

Schön, G .

PHYSICAL REVIEW B, 2001, 63 (06)

[10] Supercurrent in atomic point contacts and Andreev states [J].

Goffman, MF ;

Cron, R ;

Yeyati, AL ;

Joyez, P ;

Devoret, MH ;

Esteve, D ;

Urbina, C .

PHYSICAL REVIEW LETTERS, 2000, 85 (01) :170-173

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