Proximity effect in normal metal/ferromagnet/d-wave superconductor structures |
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| Institution: | 1. College of Chemistry and Chemical Engineering, China University of Petroleum, Dongying 257061, China;2. College of Physics Science and Technology, China University of Petroleum, Dongying 257061, China;3. Shandong Institute of Trade Union’s Administration Cadres, Jinnan 250100, China |
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| Abstract: | The superconducting proximity effect in normal metal/insulator/ferromagnet/d-wave superconductor (N/I/F/D) structures is studied based on an extended Blonder–Tinkham–Klapwijk (BTK) theory. The transition from the “0” to “π” state is found in the conductance spectra with increasing thickness of F or the ferromagnetic exchange energy. The superconducting proximity effect is drastically changed by the orientation angle α, as α increases the proximity effect is enhanced, being strongest for α/π = 0.25. |
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