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 Atomic Self-ordering in Heteroepitaxially Grown Semiconductor Quantum Dots due to Relaxation of External Lattice Mismatch Strains

2001 ◽  
Vol 696 ◽  
Author(s):  
Peter Möck ◽  
Teya Topuria ◽  
Nigel D. Browning ◽  
Robin J. Nicholas ◽  
Roger G. Booker
Keyword(s):  
Quantum Dots ◽  
Low Temperatures ◽  
Short Range ◽  
Lattice Mismatch ◽  
Life Time ◽  
Semiconductor Quantum Dots ◽  
Quantum Dot Lasers ◽  
Atomic Order ◽  
Transmission Electron ◽  
Gaas Quantum Dot

AbstractThermodynamic arguments are presented for the formation of atomic order in heteroepitaxially grown semiconductor quantum dots. From thermodynamics several significant properties of these systems can be derived, such as an enhanced critical temperature of the disorder-order transition, the possible co-existence of differently ordered domains of varying size and orientation, the possible existence of structures that have not been observed before in semiconductors, the occurrence of atomic order over time, and the occurrence of short range order when the growth proceeds at low temperatures. Transmission electron microscopy results support these predictions. Finally, we speculate on the cause for the observed increase in life time of (In,Ga)As/GaAs quantum dot lasers [H-Y. Liu et al., Appl. Phys. Lett. 79, 2868 (2001)].

Hole-hole and electron-hole exchange interactions in single InAs/GaAs quantum dots

2009 ◽  
Vol 79 (12) ◽  
Author(s):  
T. Warming ◽  
E. Siebert ◽  
A. Schliwa ◽  
E. Stock ◽  
R. Zimmermann ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Exchange Interactions ◽  
Electron Hole

scholarly journals Atomic Self-Ordering in Heteroepitaxially Grown Semiconductor Quantum Dots Due to Relaxation of External Lattice Mismatch Strains

2001 ◽  
Vol 707 ◽  
Author(s):  
Peter Möck ◽  
Teya Topuria ◽  
Nigel D. Browning ◽  
Robin J. Nicholas ◽  
Roger G. Booker
Keyword(s):  
Quantum Dots ◽  
Low Temperatures ◽  
Short Range ◽  
Lattice Mismatch ◽  
Life Time ◽  
Semiconductor Quantum Dots ◽  
Quantum Dot Lasers ◽  
Atomic Order ◽  
Transmission Electron ◽  
Gaas Quantum Dot

ABSTRACTThermodynamic arguments are presented for the formation of atomic order in heteroepitaxially grown semiconductor quantum dots. From thermodynamics several significant properties of these systems can be derived, such as an enhanced critical temperature of the disorder-order transition, the possible co-existence of differently ordered domains of varying size and orientation, the possible existence of structures that have not been observed before in semiconductors, the occurrence of atomic order over time, and the occurrence of short range order when the growth proceeds at low temperatures. Transmission electron microscopy results support these predictions. Finally, we speculate on the cause for the observed increase in life time of (In,Ga)As/GaAs quantum dot lasers [H-Y. Liu et al., Appl. Phys. Lett. 79, 2868 (2001)].

Fine Structure of Negatively and Positively Charged Excitons in Semiconductor Quantum Dots: Electron-Hole Asymmetry

2007 ◽  
Vol 98 (3) ◽  
Author(s):  
M. Ediger ◽  
G. Bester ◽  
B. D. Gerardot ◽  
A. Badolato ◽  
P. M. Petroff ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Fine Structure ◽  
Semiconductor Quantum Dots ◽  
Electron Hole ◽  
Positively Charged
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