Pauli spin blockade and influence of hyperfine interaction in vertical quantum dot molecule with six-electrons

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DOIResolve DOI: http://doi.org/10.1143/JPSJ.80.023701
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TypeArticle
Journal titleJournal of the Physical Society of Japan
ISSN0031-9015
Volume80
Issue2
Article number23701
AbstractWe investigate Pauli spin blockade and the influence of hyperfine interaction for a system of six-electrons in a device composed of two weakly coupled vertical quantum dots. As a consequence of a large built-in offset energy between the dots, the relevant charge configurations consist of one (zero) and five (six) electrons on the upstream dot and downstream dot respectively. On sweeping the out-of-dot-plane magnetic field up and down, abrupt steps and hysteresis in the leakage current are observed in the Pauli spin blockade region that evolve systematically with bias. We propose a model to explain our observations in terms of hyperfine induced singlet-triplet mixing. © 2011 The Physical Society of Japan.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Microstructural Sciences (IMS-ISM)
Peer reviewedYes
NPARC number21271246
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Record identifier25a4f785-1211-4562-8b1f-54260f8d1546
Record created2014-03-24
Record modified2016-05-09
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