Optically detected magnetic resonance at 95 GHz of exciton states in InAs/GaAs quantum dots

N. Zurauskiene, G. Janssen, E. Goovaerts, A. Bouwen, D. Schoemaker, P.M. Koenraad, J.H. Wolter

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

Samenvatting

We report an optically detected magnetic resonance study of the exciton fine structure in the MBE-grown InAs/GaAs quantum dots (QDs). The ODMR spectra were detected via modulation of the total intensity of the QD emission induced by W-band (95 GHz) microwave excitation. Two spectral features (ODMR signals) are obsd. when the static magnetic field is either parallel or perpendicular to the growth direction z of the sample. A well-pronounced pos. high-field signal obsd. for B z is attributed to hole spin transitions with nonzero (as is the case of quantum wells) effective hole g-factor gh, = 3.0. In the case when B // z the high-field signal corresponds to gh,// = 3.9. A strongly anisotropic low-field transition is tentatively attributed to cyclotron resonance (CR). [on SciFinder (R)]
Originele taal-2Engels
TitelProceedings of the School and Workshop on Nanotubes & Nanostructures, 2000
Pagina's307-313
StatusGepubliceerd - 2001

Publicatie series

NaamConference Proceedings - Italian Physical Society
Volume74
ISSN van geprinte versie1122-1437

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