Electroluminescence Spectra of an STM‐Tip‐Induced Quantum Dot
作者:
M. D. Croitoru,
V. N. Gladilin,
V. M. Fomin,
J. T. Devreese,
M. Kemerink,
P. M. Koenraad,
K. Sauthoff,
J. H. Wolter,
期刊:
AIP Conference Proceedings
(AIP Available online 1903)
卷期:
Volume 696,
issue 1
页码: 919-926
ISSN:0094-243X
年代: 1903
DOI:10.1063/1.1639803
出版商: AIP
数据来源: AIP
摘要:
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 the tunneling current. 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 tunneling current through the STM‐tip reveal a blue shift. © 2003 American Institute of Physics
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