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Density functional theory application to double quantum dots: Influence of mismatch on the addition energy spectra of vertical diatomic artificial molecules
Author(s) -
Austing D. G.,
Sasaki S.,
Muraki K.,
Ono K.,
Tarucha S.,
Barranco M.,
Emperador A.,
Pi M.,
Garcias F.
Publication year - 2002
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.10453
Subject(s) - diatomic molecule , heteronuclear molecule , density functional theory , spectral line , quantum dot , quantum , molecule , spin (aerodynamics) , molecular physics , chemistry , energy (signal processing) , physics , atomic physics , quantum mechanics , computational chemistry , thermodynamics
Local spin density functional theory calculations for double quantum dots are compared with experimental data to explain the evolution of addition energy spectra with the interdot distance. Realistic features such as finite thickness and nonidentical constituent dots are included in the calculation. We can thus evaluate the heteronuclear character of the diatomic artificial quantum molecules due to a small unavoidable mismatch introduced in their fabrication. © 2002 Wiley Periodicals, Inc. Int J Quantum Chem, 2003