Spin singlet-triplet transition in a Si-based two-electron double quantum dot molecule

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dc.creatorLee, S. D.
dc.creatorKim, S. J.
dc.creatorKang, J. S.
dc.creatorCho, Y. B.
dc.creatorChoi, J. B.
dc.creatorPark, Sooa
dc.creatorYang, S. -R. Eric
dc.creatorLee, S. J.
dc.creatorZyung, T. H.
dc.date2004-10-02
dc.date.accessioned2026-07-07T03:01:12Z
dc.date.available2026-07-07T03:01:12Z
dc.descriptionWe report a successful measurement of the magnetic field-induced spin singlet-triplet transition in silicon-based coupled dot systems. Our specific experimental scheme incorporates a lateral gate-controlled Coulomb-blockaded structure in Si to meet the proposed scheme of Loss and DiVincenzo [1], and a non-equilibrium single-electron tunneling technique to probe the fine energy splitting between the spin singlet and triplet, which varies as a function of applying magnetic fields and interdot coupling constant. Our results, exhibiting the singlet-triplet crossing at a magnetic field for various interdot coupling constants, are in agreement with the theoretical predictions, and give the first experimental demonstration of the possible spin swapping occurring in the coupled double dot systems with magnetic field. *Electronic address: jungchoi@chungbuk.ac.kr [1] D. Loss and D. P. DiVincenzo, Phys. Rev. A 57, 120 (1998).
dc.description4 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0410044
dc.identifierhttp://arxiv.org/abs/cond-mat/0410044
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/24986
dc.subjectMesoscale and Nanoscale Physics
dc.titleSpin singlet-triplet transition in a Si-based two-electron double quantum dot molecule
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