Quantitative modeling of spin relaxation in quantum dots
Hansen, J.P., Sorngård, S.A., Forre, M., & Räsänen, E. (2012). Quantitative modeling of spin relaxation in quantum dots. Physical Review B, 85(35326). https://doi.org/10.1103/PhysRevB.85.035326
Julkaistu sarjassa
Physical Review BPäivämäärä
2012Tekijänoikeudet
©2012 American Physical Society
We use numerically exact diagonalization to calculate the spin-orbit- and phonon-induced triplet-singlet relaxation rate in a two-electron quantum dot exposed to a tilted magnetic field. Our scheme includes a three-dimensional description of the quantum dot, the Rashba and the linear and cubic Dresselhaus spin-orbit coupling, the ellipticity of the quantum dot, and a full angular description of the magnetic field. We are able to find reasonable agreement with the experimental results of Meunier et al. [Phys. Rev. Lett. 98, 126601 (2007)] in terms of the singlet-triplet energy splitting and the spin relaxation rate, respectively. We analyze in detail the effects of the spin-orbit factors, magnetic-field angles, and dimensionality and discuss the origins of the remaining deviations from the experimental data.
Julkaisija
American Physical SocietyISSN Hae Julkaisufoorumista
1098-0121Asiasanat
Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/22326517
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