Coherence effects in S/I/N/I/FS tunnel junctions

doi:10.1088/1009-1963/16/11/060

中国物理B ›› 2007, Vol. 16 ›› Issue (11): 3514-3519.doi: 10.1088/1009-1963/16/11/060

Coherence effects in S/I/N/I/FS tunnel junctions

李晓薇

出版日期:2007-11-20 发布日期:2007-11-20

Coherence effects in S/I/N/I/FS tunnel junctions

Li Xiao-Wei(李晓薇)^†

Department of Physics, Huaiyin Teachers College, Huaian 223001, China

Online:2007-11-20 Published:2007-11-20

摘要/Abstract

Abstract: The dc Josephson effect in superconductor / insulator / normal metal / insulator /ferromagnetic superconductor junctions has been studied. We calculate the dc Josephson current based on the Bogoliubov de Gennes equation. The Josephson current is derived as a function of exchange field in ferromagnetic superconductor, normal metal thickness and insulating barrier strength. It is found that there exists an oscillation relation between the critical Josephson current and the normal metal thickness. The oscillation amplitude decreases as the thickness of the normal metal increases or the exchange field augments.

Key words: ferromagnetic superconductor, Josephson current, current oscillation

中图分类号: (Tunneling phenomena; Josephson effects)

74.50.+r

74.25.Sv (Critical currents) 74.45.+c (Proximity effects; Andreev reflection; SN and SNS junctions) 74.78.-w (Superconducting films and low-dimensional structures)

李晓薇. Coherence effects in S/I/N/I/FS tunnel junctions[J]. 中国物理B, 2007, 16(11): 3514-3519.

Li Xiao-Wei(李晓薇). Coherence effects in S/I/N/I/FS tunnel junctions[J]. Chinese Physics, 2007, 16(11): 3514-3519.

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Coherence effects in S/I/N/I/FS tunnel junctions

Coherence effects in S/I/N/I/FS tunnel junctions

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