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Spin Injection and Nonlocal Spin Transport in Magnetic Nanostructures

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arxiv cond-mat/0609508 v1 pith:EKQ44HFB submitted 2006-09-20 cond-mat.mes-hall cond-mat.mtrl-sci

S. Takahashi , S. Maekawa This is my paper
classification cond-mat.mes-hallcond-mat.mtrl-sci
keywords spintransportdeviceeffectinjectionnonlocalnonmagneticaccumulation
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We theoretically study the nonlocal spin transport in a device consisting of a nonmagnetic metal (N) and ferromagnetic injector (F1) and detector (F2) electrodes connected to N. We solve the spin-dependent transport equations in a device with arbitrary interface resistance from a metallic-contact to tunneling regime, and obtain the conditions for efficient spin injection, accumulation, and transport in the device. In a device containing a superconductor (F1/S/F2), the effect of superconductivity on the spin transport is investigated. The spin-current induced spin Hall effect in nonmagnetic metals is also discussed.

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