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Title
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Spin and momentum filtering of electrons on the surface of a topological insulator
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Author
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Abstract
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| We investigate theoretically the transport properties of Dirac fermions on the surface of a three-dimensional topological insulator. Dirac electrons can be totally reflected in front of a magnetic/electric p-n junction. For a p-n-p structure, multiple total internal reflections at the interfaces result in the bound states in the channel, which behaves like an electronic waveguide. This p-n-p like structure exhibits spin and momentum filtering features and could be used as a spin and/or charge diode. |
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Language
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English
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Source (journal)
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Applied physics letters / American Institute of Physics. - New York, N.Y., 1962, currens
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Publication
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New York, N.Y.
:
American Institute of Physics
,
2011
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ISSN
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0003-6951
[print]
1077-3118
[online]
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DOI
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10.1063/1.3581887
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Volume/pages
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98
:16
(2011)
, p. 162101,1-162101,3
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ISI
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000289842700032
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Full text (Publisher's DOI)
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