Coexistence of ferromagnetism and superconductivity in normal mental/superconductor/ferromagnet structures

doi:10.1088/1674-1056/19/8/087203

中国物理B ›› 2010, Vol. 19 ›› Issue (8): 87203-087203.doi: 10.1088/1674-1056/19/8/087203

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Coexistence of ferromagnetism and superconductivity in normal mental/superconductor/ferromagnet structures

郁华玲, 彭菊, 金本喜

School of Physics and Electronic Electrical Engineering and Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, Huaiyin Normal University, Huaian 223300, China

收稿日期:2009-06-28 修回日期:2010-03-08 出版日期:2010-08-15 发布日期:2010-08-15
基金资助:
Project supported by the Special Funds of the National Natural Science Foundation of China (Grant Nos. 10847132 and 10847133), and the Natural Science Foundation of Education Burean of Jiangsu Province, China (Grant No. 07KJD140024).

Coexistence of ferromagnetism and superconductivity in normal mental/superconductor/ferromagnet structures

Yu Hua-Ling(郁华玲)^†ger, Peng Ju(彭菊), and Jin Ben-Xi(金本喜)

School of Physics and Electronic Electrical Engineering and Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, Huaiyin Normal University, Huaian 223300, China

Received:2009-06-28 Revised:2010-03-08 Online:2010-08-15 Published:2010-08-15
Supported by:
Project supported by the Special Funds of the National Natural Science Foundation of China (Grant Nos. 10847132 and 10847133), and the Natural Science Foundation of Education Burean of Jiangsu Province, China (Grant No. 07KJD140024).

摘要/Abstract

摘要： We extend the Blonder, Tinkham and Klapwijk theory to the study of the inverse proximity effects in the normal mental/superconductor/ferromagnet structures. In the superconducting film, there are the gapless superconductivity and the spin-dependent density of states both within and without the energy gap. It indicates an appearance of the inverse-proximity-effect-induced ferromagnetism and a coexistence of ferromagnetism and superconductivity near the interface. The influence of exchange energy in the ferromagnet and barrier strength at the superconductor/ferromagnet interface on the inverse proximity effects is discussed.

Abstract: We extend the Blonder, Tinkham and Klapwijk theory to the study of the inverse proximity effects in the normal mental/superconductor/ferromagnet structures. In the superconducting film, there are the gapless superconductivity and the spin-dependent density of states both within and without the energy gap. It indicates an appearance of the inverse-proximity-effect-induced ferromagnetism and a coexistence of ferromagnetism and superconductivity near the interface. The influence of exchange energy in the ferromagnet and barrier strength at the superconductor/ferromagnet interface on the inverse proximity effects is discussed.

Key words: coexistence of ferromagnetism and superconductivity, inverse proximity effects, normal mental/superconductor/ferromagnet structures

中图分类号: (Proximity effects; Andreev reflection; SN and SNS junctions)

74.45.+c

74.20.-z (Theories and models of superconducting state) 74.25.Ha (Magnetic properties including vortex structures and related phenomena) 74.25.Jb (Electronic structure (photoemission, etc.)) 74.78.-w (Superconducting films and low-dimensional structures) 75.30.Cr (Saturation moments and magnetic susceptibilities)

郁华玲, 彭菊, 金本喜. Coexistence of ferromagnetism and superconductivity in normal mental/superconductor/ferromagnet structures[J]. 中国物理B, 2010, 19(8): 87203-087203.

Yu Hua-Ling(郁华玲), Peng Ju(彭菊), and Jin Ben-Xi(金本喜). Coexistence of ferromagnetism and superconductivity in normal mental/superconductor/ferromagnet structures[J]. Chin. Phys. B, 2010, 19(8): 87203-087203.

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Coexistence of ferromagnetism and superconductivity in normal mental/superconductor/ferromagnet structures

Coexistence of ferromagnetism and superconductivity in normal mental/superconductor/ferromagnet structures

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