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Spin-Orbit Coupling Effects in the dc Josephson Current in the s Wave Superconductor/Insulator/d Wave Superconductor Junction |
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| Authors: | Yanhui Bao Dan Liu Hao Fu Xiaowei Li |
| Affiliation: | 1. School of Physics, Northeast Normal University, Changchun, 130024, China 3. School of Physics and Electronic Electrical Engineering, Huaiyin Normal University, Huai’an, 223300, China 2. Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, Huaiyin Normal University, Huai’an, 223300, China |
| Abstract: | The Bogoliubov-de Gennes equation is applied to the study of the spin-orbit coupling (SOC) effects in s-wave superconductor/insulator/d-wave superconductor junctions. It is found that the dc Josephson currents show a nonmonotonic dependence on SOC scattering strength. The phase-current relationship for the spin-up and spin-down channels deviates substantially from sin2φ because of the spin-orbit scattering, so the periods of oscillation curves are 2π for the total Josephson current at α=π/4. An alternative method to confirm the effects of the spin-orbit scattering is the measurement of the phase-current relationship. |
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