Erlingsson, S I and Nazarov, Y V and Falko, Vladimir (2001) Nucleus-mediated spin-flip transitions in GaAs quantum dots. Physical review b, 64 (19). ISSN 1098-0121Full text not available from this repository.
Spin-flip rates in GaAs quantum dots can be quite slow, thus opening up the possibilities to manipulate spin states in the dots. We present here estimations of inelastic spin-flip rates mediated by hyperfine interaction with nuclei. Under general assumptions the nucleus-mediated rate is proportional to the phonon relaxation rate for the corresponding non-spin-flip transitions. The rate can be accelerated in the vicinity of a singlet-triplet excited state crossing. The small proportionality coefficient depends inversely on the number of nuclei in the quantum dot. We compare our results with known mechanisms of spin-flip in GaAs quantum dots.
|Journal or Publication Title:||Physical review b|
|Subjects:||Q Science > QC Physics|
|Departments:||Faculty of Science and Technology > Physics|
|Deposited On:||31 Aug 2012 11:45|
|Last Modified:||07 Jan 2015 17:45|
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