Mesoscopic Josephson junctions with switchable current-phase relation

被引：5
|
作者：
Strambini, E. [1 ,2 ]
Bergeret, F. S. [3 ,4 ,5 ]
Giazotto, F. [1 ,2 ]
机构：
[1] CNR, NEST Ist Nanosci, I-56127 Pisa, Italy
[2] Scuola Normale Super Pisa, I-56127 Pisa, Italy
[3] Ctr Mixto CSIC UPV EHU, Ctr Fis Mat CFM MPC, E-20018 San Sebastian, Spain
[4] DIPC, E-20018 San Sebastian, Spain
[5] Carl von Ossietzky Univ Oldenburg, Inst Phys, D-26111 Oldenburg, Germany
来源：
EPL | 2015年 / 112卷 / 01期
基金：
欧洲研究理事会;
关键词：
SUPERCONDUCTOR-FERROMAGNET STRUCTURES; TUNNEL-JUNCTIONS; MAGNETIC-FIELD; SPIN; SUPERCURRENTS; SPINTRONICS; EXCHANGE;
D O I：
10.1209/0295-5075/112/17013
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We propose and analyze a mesoscopic Josephson junction consisting of two ferromagnetic insulator-superconductors (FI-Ss) coupled through a normal metal (N) layer. The Josephson current of the junction is non-trivially affected by the spin-splitting field induced by the FIs in the two superconductors. In particular, it shows sizeable enhancement by increasing the amplitude of the exchange field (h(ex)) and displays a switchable current-phase relation which depends on the relative orientation of h(ex) in the FIs. In a realistic EuS/Al-based setup this junction can be exploited as a high-resolution threshold sensor for the magnetic field as well as an on-demand tunable kinetic inductor. Copyright (C) EPLA, 2015
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页数：5
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