Spin-selective Aharonov-Bohm oscillations in a lateral triple quantum dot

Download
  1. Get@NRC: Spin-selective Aharonov-Bohm oscillations in a lateral triple quantum dot (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1103/PhysRevLett.101.226810
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titlePhysical Review Letters
ISSN0031-9007
Volume101
Issue22
Article number226810
SubjectElectron tubes; Magnetic fields; Motion estimation; Optical waveguides; Quantum electronics; Semiconductor quantum dots; Spin dynamics; A magnetic fields; Electron charges; Electron complexes; Interacting electrons; Localized electrons; Microscopic calculations; Relative orientations; Ring configurations; Single electron spins; Spin singlets; Spin valves; Triple quantum
AbstractWe present a theory of spin-selective Aharonov-Bohm oscillations in a lateral triple quantum dot. We show that to understand the Aharonov-Bohm (AB) effect in an interacting electron system within a triple quantum dot molecule (TQD) where the dots lie in a ring configuration requires one to not only consider electron charge but also spin. Using a Hubbard model supported by microscopic calculations we show that, by localizing a single electron spin in one of the dots, the current through the TQD molecule depends not only on the flux but also on the relative orientation of the spin of the incoming and localized electrons. AB oscillations are predicted only for the spin singlet electron complex resulting in a magnetic field tunable "spin valve." © 2008 The American Physical Society.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Microstructural Sciences
Peer reviewedYes
NPARC number21274611
Export citationExport as RIS
Report a correctionReport a correction
Record identifier5b8c8113-7130-443a-ba55-543ce5490323
Record created2015-03-18
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)