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Spin Polarized Tunneling through a Ferromagnetic Barrier
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Ching-Ray Chang and Sui-Pin Chen
Department of Physics, National Taiwan University Taipei, Taiwan 106, R.O.C. (Received February 10, 1998) |
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We have studied the spin polarized tunneling through a ferromagnetic barrier and
concluded that the magnetoresistance ratio will increase significantly. Spin-dependent barrier
acts as a spin-filter and gives rise to a strong polarization of the tunneling current. For the
asymmetric spin-filter tunneling junction, only a ferromagnetic electrode is required.
PACS: 75.70.-i; 73.40.Gk; 75.30.Gw; 73.50.Jt |
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