Vanishing current hysteresis under competing nuclear spin pumping processes in a quadruplet spin-blockaded double quantum dot

Download
  1. Get@NRC: Vanishing current hysteresis under competing nuclear spin pumping processes in a quadruplet spin-blockaded double quantum dot (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1063/1.4919101
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleApplied Physics Letters
ISSN0003-6951
Volume106
Issue17
Article number172401
SubjectHysteresis; Magnetic leakage; Nanocrystals; Pumps; Quantum theory; Spin dynamics; Current hysteresis; Double quantum dots; Double-quantum dot device; Hyperfine interactions; Nuclear spins; Spin state; Semiconductor quantum dots
AbstractWe investigate nuclear spin pumping with five-electron quadruplet spin states in a spin-blockaded weakly coupled vertical double quantum dot device. Two types of hysteretic steps in the leakage current are observed on sweeping the magnetic field and are associated with bidirectional polarization of nuclear spin. Properties of the steps are understood in terms of bias-voltage-dependent conditions for the mixing of quadruplet and doublet spin states by the hyperfine interaction. The hysteretic steps vanish when up- and down-nuclear spin pumping processes are in close competition.
Publication date
PublisherAIP Publishing
LanguageEnglish
AffiliationInformation and Communication Technologies; National Research Council Canada
Peer reviewedYes
NPARC number21275747
Export citationExport as RIS
Report a correctionReport a correction
Record identifierdeb4cd6d-a932-436e-b950-8709ae84c0ab
Record created2015-07-14
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)