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Hyperfine-mediated spin-flip transitions in GaAs quantum dots

✍ Scribed by Sigurdur I. Erlingsson; Yuli V. Nazarov; Vladimir I. Fal'ko

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
82 KB
Volume
12
Category
Article
ISSN
1386-9477

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✦ Synopsis

Spin-ip 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-ip rates mediated by hyperÿne interaction with nuclei. Under general assumptions, the nucleus mediated rate is proportional to the phonon relaxation rate for the corresponding non-spin-ip transitions. The rate can be accelerated in the vicinity of a singlet-triplet excited states crossing. We compare our results with known mechanisms of spin-ip in GaAs quantum dot.

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