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Electroluminescence spectra of an STM-tip-induced quantum dot

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We analyze the electroluminescence spectrum of an STM-tip-induced quantum dot in a GaAs surface layer. A flexible model has been developed that combines analytical and numerical methods and describes the key features of many-particle states in the STM-tip-induced quantum dot. The dot is characterize...

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Bibliographic Details
Main Authors: Croitoru, Mihail D. (Author) , Gladilin, Vladimir N. (Author) , Devreese, Jozef T. (Author) , Kemerink, Martijn (Author) , Koenraad, Paulus M. (Author) , Sauthoff, K. (Author) , Wolter, Joachim H. (Author)
Other Authors: Fomin, Vladimir M. (Other)
Format: Article (Journal)
Language:English
Published: 11 November 2004
In: Physical review. B, Condensed matter and materials physics
Year: 2003, Volume: 68, Issue: 19
ISSN:1550-235X
DOI:10.1103/PhysRevB.68.195307
Online Access:Verlag, Volltext: https://doi.org/10.1103/PhysRevB.68.195307
Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevB.68.195307
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Author Notes:M.D. Croitoru, V.N. Gladilin, V.M. Fomin, and J.T. Devreese, M. Kemerink, P.M. Koenraad, K. Sauthoff, and J.H. Wolter
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Summary:We analyze the electroluminescence spectrum of an STM-tip-induced quantum dot in a GaAs surface layer. A flexible model has been developed that combines analytical and numerical methods and describes the key features of many-particle states in the STM-tip-induced quantum dot. The dot is characterized by its depth and lateral width, which are experimentally controlled by the bias and current. We find, in agreement with experiment, that increasing the voltage on the STM tip results in a redshift of the electroluminescence peaks, while the peak positions as a function of electron tunneling current through the STM tip reveal a blueshift.
Item Description:Gesehen am 09.12.2019
Physical Description:Online Resource
ISSN:1550-235X
DOI:10.1103/PhysRevB.68.195307

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