摘要By means of the transfer matrix technique, the electronic transport through a quantum waveguide in the presence of a magnetic obstacle is investigated theoretically. By comparing the calculated conductance spectra of the opposite spin electrons, we find that there exists a notable spin filtering window in the low energy region. Dependences of such a spin filtering window on the size, position and potential strength of the magnetic obstacle are studied in detail.
Abstract：By means of the transfer matrix technique, the electronic transport through a quantum waveguide in the presence of a magnetic obstacle is investigated theoretically. By comparing the calculated conductance spectra of the opposite spin electrons, we find that there exists a notable spin filtering window in the low energy region. Dependences of such a spin filtering window on the size, position and potential strength of the magnetic obstacle are studied in detail.
(Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields)
引用本文:
GAO Wen-Zhu;SUN Lang;ZHENG Yi-Song. Electronic Transport through a Waveguide in the Presence of a Magnetic Obstacle[J]. 中国物理快报, 2007, 24(6): 1693-1696.
GAO Wen-Zhu, SUN Lang, ZHENG Yi-Song. Electronic Transport through a Waveguide in the Presence of a Magnetic Obstacle. Chin. Phys. Lett., 2007, 24(6): 1693-1696.
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