Coulomb and spin blockade of two few-electron quantum dots in series in the cotunneling regime

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DOIResolve DOI: http://doi.org/10.1103/PhysRevB.70.235306
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TypeArticle
Journal titlePhysical review. B, Condensed matter and materials physics
Volume70
Issue23
Pages235306
AbstractWe present Coulomb blockade measurements of two few-electron quantum dots in series configured such that the electrochemical potential of one of the two dots was aligned with spin-selective leads. Charge transfer through the system required cotunneling through the second dot (which was not in resonance with the leads). The amplitude modulation of the current was found to reflect spin blockade events occurring at either of the two dots. We also confirm that charge redistribution events that occurred in the off-resonance dot could be detected indirectly via changes in the electrochemical potential of the aligned dot.
Publication date
AffiliationNational Research Council Canada; NRC Institute for Microstructural Sciences
Peer reviewedNo
NPARC number12744890
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Record identifierb7a68437-64fe-4a72-8b13-b141e85aea9f
Record created2009-10-27
Record modified2016-05-09
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