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Long-lived spin polarisation in the charged InP quantum dots

✍ Scribed by I.V Ignatiev; I.Ya Gerlovin; M Ikezawa; V.K Kalevich; S.Yu Verbin; Y Masumoto

Publisher: Elsevier Science
Year: 2003
Tongue: English
Weight: 106 KB
Volume: 17
Category: Article
ISSN: 1386-9477
DOI: 10.1016/s1386-9477(02)00811-1

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✦ Synopsis

This work is aimed at the investigation of the spin relaxation in controllably charged quantum dots (QDs). Measuring the dependence of the spin lifetime on the gate voltage in a heterostructure containing InP QDs, we detected the onset of spin conservation when the QD became negatively charged. The spin lifetime in the charged QDs exceeded 1 ns. Various properties of the long-lived spin polarisation of the QDs in longitudinal magnetic ÿeld as well as under various excitation conditions are discussed.

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