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Title
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Square-wave conductance through a chain of rings due to spin-orbit interaction
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Author
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Abstract
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| We study ballistic electron transport through a finite chain of quantum circular rings in the presence of spin-orbit interaction (SOI) of strength alpha. The transmission and reflection coefficients for a single ring, obtained analytical lylead to the conductance for a chain of rings as a function of alpha and of the wave vector k of the incident electron. Due to destructive spin interferences the chain can be totaly opaque for certain ranges of k the width of which depends on the value of alpha. A periodic modulation of a widens up the gaps considerably and produces a nearly binary conductance output. |
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Language
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English
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Source (journal)
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AIP conference proceedings / American Institute of Physics. - New York
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Publication
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New York
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2005
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ISSN
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0094-243X
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Volume/pages
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772
(2005)
, p. 1335-1336
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ISI
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000230723900619
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