Singlet-Triplet Transition Tuned by Asymmetric Gate Voltages in a Quantum Ring

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dc.creatorFuhrer, A.
dc.creatorIhn, T.
dc.creatorEnsslin, K.
dc.creatorWegscheider, W.
dc.creatorBichler, M.
dc.date2003-06-26
dc.date.accessioned2026-07-07T02:52:03Z
dc.date.available2026-07-07T02:52:03Z
dc.descriptionWavefunction and interaction effects in the addition spectrum of a Coulomb blockaded many electron quantum ring are investigated as a function of asymmetrically applied gate voltages and magnetic field. Hartree and exchange contributions to the interaction are quantitatively evaluated at a crossing between states extended around the ring and states which are more localized in one arm of the ring. A gate tunable singlet-triplet transition of the two uppermost levels of this many electron ring is identified at zero magnetic field.
dc.description4 pages
dc.identifierhttps://arxiv.org/abs/cond-mat/0306667
dc.identifierhttp://arxiv.org/abs/cond-mat/0306667
dc.identifierPhys. Rev. Lett. 91 (20) 206802 (2003)
dc.identifierdoi:10.1103/PhysRevLett.91.206802
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/21699
dc.subjectMesoscale and Nanoscale Physics
dc.titleSinglet-Triplet Transition Tuned by Asymmetric Gate Voltages in a Quantum Ring
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