Peer-Reviewed Journal Details
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Brown, J and Wells, JPR and Hashemizadeh, SA and Parbrook, PJ and Wang, T and Fox, AM and Mowbray, DJ and Skolnick, MS;
2006
Physica Status Solidi B-Basic Solid State Physics
Fast spin relaxation in InGaN/GaN multiple quantum wells
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243
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We report measurements of a fast spin relaxation in InGaN multi-quantum wells (MQW) using femtosecond circularly polarised pump-probe spectroscopy. These reveal quantum beats in the spin polarisation arising from a 1.6 meV fine structure splitting of the excitonic levels. We attribute this splitting to exchange interactions in the narrow quantum wells studied. The 5 K spin coherence time was measured to be 450 fs, a value which decreases by a factor of approximately two by 50 K. (c) 2006 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim.
10.1002/pssb.200565271
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