Shot noise in the semiconductor/ferromagnetic d-wave superconductor tunnel junction
Liang Zhi-Peng, Dong Zheng-Chao, (1)淮阴师范学院物理系,淮安 223001; (2)苏州大学物理科学与技术学院,苏州 215006;淮阴师范学院物理系,淮安 223001
Abstract
Liang Zhi-Peng, Dong Zheng-Chao, (1)淮阴师范学院物理系,淮安 223001; (2)苏州大学物理科学与技术学院,苏州 215006;淮阴师范学院物理系,淮安 223001
Abstract
Considering the dependence of the gap on the exchange energy in ferromagnetic d-wave superconductor, we use an extended Blonder-Tinkham-Klapwijk approach to investigate the shot noise in semiconductor/ferromagnetic d-wave superconductor junction by solving the Bogoliubov-de Gennes(BdG) equation. It is shown that the exchange energy h0 in the ferromagnetic d-wave superconductor may induce a split of the shot noise double-peak at zero-bias and the energy gap peak, and the interval between the two split peaks is equal to 2h0; furthermore, with the increasing exchange energy h0, the shot noise and the ratio of shot noise power to average current are restrained.
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Considering the dependence of the gap on the exchange energy in ferromagnetic d-wave superconductor, we use an extended Blonder-Tinkham-Klapwijk approach to investigate the shot noise in semiconductor/ferromagnetic d-wave superconductor junction by solving the Bogoliubov-de Gennes(BdG) equation. It is shown that the exchange energy h0 in the ferromagnetic d-wave superconductor may induce a split of the shot noise double-peak at zero-bias and the energy gap peak, and the interval between the two split peaks is equal to 2h0; furthermore, with the increasing exchange energy h0, the shot noise and the ratio of shot noise power to average current are restrained.
Key concepts: Condensed matter physics, Superconductivity, Shot noise, Ferromagnetism, Physics, Noise (video), Energy (signal processing), Semiconductor