Spin Imbalance and Magnetoresistance in Ferromagnet/Superconductor/Ferromagnet Double Tunnel Junctions
作者： S. Takahashi , H. Imamura , S. Maekawa
DOI: 10.1103/PHYSREVLETT.82.3911
关键词: Spin polarization 、 Magnetoresistance 、 Condensed matter physics 、 Tunnel magnetoresistance 、 Tunnel junction 、 Superconductivity 、 Biasing 、 Physics 、 Antiferromagnetism 、 Spin wave
摘要: We theoretically study the spin-dependent transport in a ferromagnet/superconductor/ferromagnet double tunnel junction. The tunneling current antiferromagnetic alignment of magnetizations gives rise to spin imbalance superconductor. resulting nonequilibrium density strongly suppresses superconductivity with increase bias voltage and destroys it at critical ${V}_{c}$. results provide new method not only for measuring polarization ferromagnets but also controlling magnetoresistance by applying voltage.
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