Abstract The scattering matrix approach between the clean and dirty limits is developed for the study of tunneling spectra in a ferromagnetic film in proximity to a superconductor. The minigap and the damped oscillation from ``0" to ``$\pi$" state in tunneling conductance are attributed to the phase coherence of the electrons and the corresponding Andreev-reflected holes in the ferromagnetic film. The calculated results provide a reasonable explanation for the behavior observed in recent experiments.
Received: 25 October 2007
Revised: 06 July 2008
Accepted manuscript online:
PACS:
74.45.+c
(Proximity effects; Andreev reflection; SN and SNS junctions)
Fund: Project supported by the Natural
Science Foundation of Education Burean of Jiangsu Province, China
(Grant No 07KJD140024), and Jiangsu key Laboratory for Chemistry of
Low-Dimensional Materials (Huaiyin Teachers College), China.
Cite this article:
Yu Hua-Ling (郁华玲), Wang Zhi-Guo (王之国), Peng Ju (彭菊) Phase coherence of the electron and hole in a ferromagnetic film in proximity with a superconductor 2008 Chin. Phys. B 17 4627
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