Magnetic field dependence of the maximum Josephson current in a double-barrier junction

被引：6
作者：
De Luca, R. [1 ]
机构：
[1] Univ Salerno, DMI, I-84084 Fisciano, SA, Italy
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2010年 / 470卷 / 11-12期
关键词：
Josephson junction; Maximum Josephson current;
D O I：
10.1016/j.physc.2010.04.003
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The influence of a constant magnetic field on the maximum Josephson current of a double-barrier junction is studied. Owing to the peculiarity of the current-phase relation of this composite device, the resulting Fraunhofer-like pattern shows an overall enhancement of the maximum Josephson current with respect to the usual single-junction curves for very small difference in the coupling energies of the two pairs of adjacent layers in the system. (C) 2010 Elsevier B.V. All rights reserved.
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收藏
页码：487 / 490
页数：4
相关论文
共 8 条
[1]  
Barone A., 1982, PHYS APPL JOSEPHSON
[2]   Josephson equations for the simplest superconducting multilayer system [J].
Carapella, G ;
Costabile, G ;
DeLuca, R ;
Pace, S ;
Polcari, A ;
Soriano, C .
PHYSICA C, 1996, 259 (3-4) :349-355
[3]   Sawtooth current-phase relation of a superconducting trilayer system described using Ohta's formalism [J].
De Luca, R. ;
Romeo, F. .
PHYSICAL REVIEW B, 2009, 79 (09)
[4]   Current locking in magnetically coupled long Josephson junctions [J].
Goldobin, E ;
Ustinov, AV .
PHYSICAL REVIEW B, 1999, 59 (17) :11532-11538
[5]   Strong coupling effects in (Nb-Al-AlOx)2-Nb stacked Josephson junctions [J].
Goldobin, E ;
Kupriyanov, MY ;
Nevirkovets, IP ;
Ustinov, AV ;
Blamire, MG ;
Evetts, JE .
PHYSICAL REVIEW B, 1998, 58 (22) :15078-15087
[6]  
Likharev K. K., 1986, Dynamics of Josephson Junctions and Circuits
[7]   Investigation of the coupling between the outer electrodes in the superconducting double-barrier devices [J].
Nevirkovets, IP ;
Evettes, JE ;
Blamire, MG ;
Barber, ZH ;
Goldobin, E .
PHYSICS LETTERS A, 1997, 232 (3-4) :299-304
[8]  
Ohta H., 1976, IC SQUID, V76, P35
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