Josephson current in d-wave superconductor junctions with ferromagnetic insulator

Автор(и)

  • Yan-Hua Liao School of Mathematics and Physics, Huangshi Institute of Technology, Huangshi 435100, People's Republic of China
  • Meng Yang School of Mathematics and Physics, Huangshi Institute of Technology, Huangshi 435100, People's Republic of China
  • Chang Ma School of Mathematics and Physics, Huangshi Institute of Technology, Huangshi 435100, People's Republic of China
  • Yu-Bin Cao School of Mathematics and Physics, Huangshi Institute of Technology, Huangshi 435100, People's Republic of China

DOI (Low Temperature Physics):


https://doi.org/10.1063/1.4705736

Ключові слова:

high-Tc superconductors, ferromagnetic insulator, Josephson current.

Анотація

We investigate the temperature dependence of the critical current and current-phase relation by taking into account the ferromagnetic scattering effect at interface in a d-wave superconductor (S)/ferromagnetic insulator layer (FI)/d-wave superconductor (S) junction. It is shown that both the barrier scattering and the roughness scattering at the interface always suppress the Andreev reflection. The Josephson critical currents depend to a great extent on the effective exchange field of the interface and the crystal orientation of the d-wave superconductor. The exchange field can lead to the change of the junction from 0 to π states and the alteration of the oscillation periods. It can also enhance the Josephson critical current in the junction under certain conditions.

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Опубліковано

2012-03-16

Як цитувати

(1)
Yan-Hua Liao, Meng Yang, Chang Ma, and Yu-Bin Cao, Josephson current in d-wave superconductor junctions with ferromagnetic insulator, Low Temp. Phys. 38, (2012) [Fiz. Nizk. Temp. 38, 474-479, (2012)] DOI: https://doi.org/10.1063/1.4705736.

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Надпровідність, зокрема високотемпературна

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