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Conductance modulation in a normal metal/ferromagnetormal metal junction

机译:普通金属/铁磁体/普通金属结中的电导调制

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Spin-dependent quantum transport in a NM1/FM/NM2 planar junction is studied, where FM and NM1,2 are a ferromagnet and two different normal metals, respectively. In this work, the oscillatory conductance depending on thickness of FM is studied by focusing on the scattering of the Schrodinger electrons at the interfaces. The conductance modulation due to the energy of the mobile electrons split in FM layer occurs when FM and NM2 have both the Fermi energies much higher than that of the Fermi energy E-F in NM1 and the exchange energy h(1) in FM is much smaller than its Fermi energy E-F1, h(1)/EF1 1. Comparing with the conductance modulation due to massless Dirac electron, recently investigated by Soodchomshom et al. [Phys. Lett. A 372 (2008) 5054], electrons in a conventional system, governed by Schrodinger equation, always carry the modulated conductance with decaying amplitude when thickness of FM increases. This Schrodinger conductance modulation is quite different from the massless Dirac modulated conductance with holding constant amplitude.
机译:研究了NM1 / FM / NM2平面结中自旋相关的量子输运,其中FM和NM1,2分别是铁磁体和两种不同的普通金属。在这项工作中,通过关注界面上的薛定inger电子的散射,研究了取决于FM厚度的振荡电导。当FM和NM2的费米能远高于NM1的费米能EF且费米的交换能h(1)远小于FM时,由于FM层中移动电子分裂的能量而发生的电导调制发生它的费米能量E-F1,h(1)/ EF1 1。与无质量狄拉克电子引起的电导调制相比,Soodchomshom等人最近对其进行了研究。 [物理来吧在372(2008)5054]中,在常规系统中,电子受Schrodinger方程控制,当FM的厚度增加时,其电导率总是随振幅的衰减而衰减。该薛定inger电导调制与保持恒定振幅的无质量狄拉克调制电导有很大不同。

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