Mode selective control of flow turbulence |
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Authors: | C -Y Yang G -N Tang |
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Institution: | (1) National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, P.R. China |
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Abstract: | We study spin transport in
normal/ferromagnetic/normal/ferromagnetic.../normal
graphene superlattices, which can be realized by putting a series of
magnetic insulator bars on top of a graphene sheet. Owing to
magnetic proximity effect, local exchange splittings will be induced
in the graphene sheet, effectively forming a magnetic graphene
superlattice. The spin polarization of tunneling conductance and the
magneto resistance (MR) exhibit oscillatory behavior with the gate
voltage. The superlattice structure leads to an enhanced spin
polarization and MR ratio, making the magnetic graphene superlattice
become very promising in spintronics applications. |
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Keywords: | PACS" target="_blank">PACS 72 25 -b Spin polarized transport 73 43 Jn Tunneling 81 05 Uw Carbon diamond graphite |
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