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Nonequilibrium Effect in Ferromagnet-Insulator-Superconductor Tunneling Junction Currents
Department of Electrical and Electronic System Engineering, Utsunomiya University, Utsunomiya, Japan
Department of Electrical and Electronic System Engineering, Utsunomiya University, Utsunomiya, Japan
Department of Electrical and Electronic System Engineering, Utsunomiya University, Utsunomiya, Japan
- 1 Department of Electrical and Electronic System Engineering, Utsunomiya University, Utsunomiya, Japan
- 2 Department of Electrical and Electronic System Engineering, Utsunomiya University, Utsunomiya, Japan
- 3 Department of Electrical and Electronic System Engineering, Utsunomiya University, Utsunomiya, Japan
World Journal of Condensed Matter Physics·Volume 06 (2016)·Pages 169–176·Published 25 July 2016·DOI10.4236/wjcmp.2016.63018
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Abstract
Nonequilibrium effect due to the imbalance in the number of the ? and ? spin electrons has been studied for the tunneling currents in the ferromagnet-insulator-superconductor (FIS) tunneling junctions within a phenomenological manner. It has been stated how the nonequilibrium effect should be observed in the spin-polarized quasiparticle tunneling currents, and pointed out that the detectable nonequilibrium effect could be found in the FIS tunneling junction at 77 K using HgBa2Ca2Cu3O8+? (Hg-1223) high-Tc superconductor rather than Bi2Sr2CaCu2O8+? (Bi-2212) one.
KeywordsNonequilibrium EffectFerromagnet-Insulator-Superconductor Tunneling JunctionHg-1223Bi-2212Spin-Polarized Quasiparticle Tunneling
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