Direct-Bandgap InAs Quantum-Dots Have Long-Range Electron−Hole Exchange whereas Indirect Gap Si Dots Have Short-Range Exchange

Nano Letters ◽  
2009 ◽  
Vol 9 (7) ◽  
pp. 2648-2653 ◽  
Author(s):  
Jun-Wei Luo ◽  
Alberto Franceschetti ◽  
Alex Zunger
Keyword(s):  
Quantum Dots ◽  
Long Range ◽  
Short Range ◽  
Electron Hole ◽  
Inas Quantum Dots ◽  
Direct Bandgap

Short-range versus long-range electron-hole exchange interactions in semiconductor quantum dots

1998 ◽  
Vol 58 (20) ◽  
pp. R13367-R13370 ◽  
Author(s):  
A. Franceschetti ◽  
L. W. Wang ◽  
H. Fu ◽  
A. Zunger
Keyword(s):  
Quantum Dots ◽  
Long Range ◽  
Short Range ◽  
Exchange Interactions ◽  
Semiconductor Quantum Dots ◽  
Electron Hole

scholarly journals LEVEL REARRANGEMENT IN EXOTIC ATOMS AND QUANTUM DOTS

2007 ◽  
Vol 21 (22) ◽  
pp. 3765-3781 ◽  
Author(s):  
MONIQUE COMBESCURE ◽  
AVINASH KHARE ◽  
ASHOK K. RAINA ◽  
JEAN-MARC RICHARD ◽  
CAROLE WEYDERT
Keyword(s):  
Quantum Dots ◽  
Long Range ◽  
Short Range ◽  
Condensed Matter ◽  
Attractive Potential ◽  
Condensed Matter Physics ◽  
Exotic Atoms ◽  
Short Range Interaction ◽  
Range Interaction ◽  
Harmonic Confinement

A presentation and a generalization are given of the phenomenon of level rearrangement. This occurs when an attractive long-range potential is perturbed by a short-range attractive potential as its strength is increased. This phenomenon was first discovered in condensed matter physics and has also been studied in the physics of exotic atoms. A similar phenomenon occurs in a model that we propose, inspired by quantum dots, where a short-range interaction is added to a harmonic confinement.

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