Electroluminescence spectra of an STM-tip-induced quantum dot

M.D. Croitoru, V.N. Gladilin, V. Fomin, J.T. Devreese, M. Kemerink, P.M. Koenraad, K. Sauthoff, J.H. Wolter

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic


We analyse the electroluminescence measurements performed on a STM-tip-induced quantum dot in a GaAs layer. Positions of electroluminescence peaks, attributed to the electron-hole recombination in the quantum dot, are very sensitive to the electron tunnelling current even in the case when the current is weak and the effect of the electron charge on the electrostatic potential profile in the structure is negligible. We find, in agreement with experiment, that increasing voltage on the STM-tip results in a red shift of the electroluminescence peaks, while the peak positions as a function of the electron tunnelling current reveal a blue shift.
Original languageEnglish
Title of host publicationPhysics of semiconductors 2002 : proceedings of the 26th International Conference on the Physics of Semiconductors held in Edinburgh, UK, 29 July - 2 August 2002
EditorsA.R. Long, J.H. Davies
Place of PublicationBristol
PublisherInstitute of Physics
ISBN (Print)0-7503-0924-5
Publication statusPublished - 2003
Event26th International Conference on the Physics of Semiconductors - Edinburgh, United Kingdom
Duration: 29 Jul 20022 Aug 2002

Publication series

NameInstitute of Physics Conference Series
ISSN (Print)0951-3248


Conference26th International Conference on the Physics of Semiconductors
Country/TerritoryUnited Kingdom


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