Title
Square-wave conductance through a chain of rings due to spin-orbit interaction Square-wave conductance through a chain of rings due to spin-orbit interaction
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
conferenceObject
Publication
New York ,
Subject
Physics
Source (journal)
AIP conference proceedings / American Institute of Physics. - New York
Volume/pages
772(2005) , p. 1335-1336
ISSN
0094-243X
ISI
000230723900619
Carrier
E
Target language
English (eng)
Affiliation
University of Antwerp
Abstract
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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