Hyperfine-induced hysteretic funnel structure in spin blockaded tunneling current of coupled vertical quantum dots at low magnetic field

DOIResolve DOI: http://doi.org/10.1063/1.4848357
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TypeArticle
Proceedings titleThe Physics of Semiconductors: Proceedings of the 31st International Conference on the Physics of Semiconductors
Conference31st International Conference on the Physics of Semiconductors 2012, 29 July–3 August 2012, Zurich, Switzerland
ISBN9780735411944
Pages205206
SubjectMagnetic fields; Polarization; Quantum dot devices; Leakage currents; High voltage; Direct current transmission
AbstractWe outline the properties of the hyperfine-induced funnel structure observed in the two-electron spin blockade region of a weakly coupled vertical double quantum dot device. Hysteretic steps in the leakage current occur due to dynamic nuclear polarization when either the bias voltage or the magnetic field is swept up and down. When the bias voltage is swept, an intriguing ∼3 mT wide cusp near 0 T appears in the down-sweep position, and when the magnetic field is swept, the current at 0 T can be switched from "low" to "high" as the bias is increased.
Publication date
PublisherAIP Publishing
LanguageEnglish
AffiliationAerospace; Information and Communication Technologies; National Research Council Canada
Peer reviewedYes
NPARC number23000543
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Record identifier35e18247-e4ee-4a50-a6de-2d8a39f16807
Record created2016-07-29
Record modified2016-07-29
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