Depression of the interlayer Josephson coupling in Bi2Sr2CaCu2O8+x single crystals by spin-polarized current injection along the c-axis
SCIE
SCOPUS
- Title
- Depression of the interlayer Josephson coupling in Bi2Sr2CaCu2O8+x single crystals by spin-polarized current injection along the c-axis
- Authors
- Shin, HS; Lee, HJ
- Date Issued
- 2004-08
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- We studied the effect of spin-injection on tunneling conduction properties of intrinsic Josephson junctions (IJJs) formed in Bi2Sr2CaCuO8+x single crystals. Properties of an identical stack (10 x 5 x 0.030 mum(3)) of IJJs were compared for the bias current injection through An and Co electrodes. Clear quasiparticle branches in tunneling current-voltage (I-V) curves from the IJJs in the stack were observed for all unpolarized bias current through the Au electrode. Spin-injection through the Co electrode caused pair breaking in the CuO2 double layers, which led to reduction of the Josephson critical current and the superconducting gap revealed in the tunneling I-V curves. (C) 2004 Published by Elsevier B.V.
- Keywords
- spin-polarized tunneling; intrinsic Josephson junctions; pair breaking.; interlayer Josephson coupling; SUPERCONDUCTOR; FERROMAGNET
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/17695
- DOI
- 10.1016/j.physc.2004.03.086
- ISSN
- 0921-4534
- Article Type
- Article
- Citation
- PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, vol. 408, page. 623 - 624, 2004-08
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