Shot Noise in Ferromagnetic Superconductor Tunnel Junctions |
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Authors: | LI Xiao-Wei |
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Institution: | Department of Physics, Huaiyin Normal College, Huaian 223001, China |
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Abstract: | In this paper, the superconducting order parameter and the energy spectrum of the Bogoliubov excitations are obtained from the Bogoliubov-de Gennes (BdG) equation for a ferromagnetic
superconductor (FS). Taking into account the rough interface
scattering effect, we calculate the shot noise and the differential
conductance of the normal-metal insulator ferromagnetic superconductor
junction. It is shown that the exchange energy Eh in FS can lead to splitting of the differential
shot noise peaks and the conductance peaks. The energy difference between the two splitting peaks is equal to
2Eh. The rough interface scattering strength
results in descent of conductance peaks and the shot noise-to-current ratio but increases the shot noise. |
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Keywords: | ferromagnetic superconductor N/I/FS junction shot noise the rough interface scattering |
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