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Electronic Transport through a Waveguide in the Presence of a Magnetic Obstacle |
| GAO Wen-Zhu;SUN Lang;ZHENG Yi-Song |
| Department of Physics, Jilin University, Changchun 130023 |
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| Cite this article: |
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GAO Wen-Zhu, SUN Lang, ZHENG Yi-Song 2007 Chin. Phys. Lett. 24 1693-1696 |
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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.
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| Keywords:
72.25.Dc
72.25.Mk
73.21.Hb
75.47.-m
85.75.-d
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Received: 15 March 2007
Published: 17 May 2007
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| PACS: |
72.25.Dc
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(Spin polarized transport in semiconductors)
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72.25.Mk
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(Spin transport through interfaces)
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73.21.Hb
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(Quantum wires)
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75.47.-m
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(Magnetotransport phenomena; materials for magnetotransport)
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85.75.-d
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(Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields)
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