Resonances of trion states in quantum dot molecules tuned by an electric field

2007 ◽  
Vol 75 (11) ◽  
Author(s):  
Marcos H. Degani ◽  
Marcelo Z. Maialle
Keyword(s):  
Quantum Dot ◽  
Electric Field ◽  
Quantum Dot Molecules

EFFECTS OF ELECTRIC FIELD ON THE ELECTRONIC STRUCTURE OF QUANTUM DOTS

2002 ◽  
Vol 16 (19) ◽  
pp. 2791-2806 ◽  
Author(s):  
LI-MIN WANG ◽  
YING LUO ◽  
BEN-KUN MA
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
Valence Bond ◽  
Bound State ◽  
Covalent Bonds ◽  
Quantum Dot Molecules ◽  
Calculation Results

Within the framwork of the effective mass approximation, the electronic structures of quantum dots in the presence of electric field are investigated by the finite element method. Numerical calculation results show that, with finite confining potential, the highest electronic bound state in the quantum dots gradually changes into a quasi-bound state as the electric field strength increases. For the quantum-dot molecules, the valence bonds between quantum dots alternates between the covalent bonds and ionic bonds with increasing electric field strength. The oscillator strength of intraband transition reflects the effect of the electric field on the valence bond property in quantum-dot molecules.

Electric field control of exciton states in quantum dot molecules

2004 ◽  
Vol 21 (2-4) ◽  
pp. 171-174 ◽  
Author(s):  
G Ortner ◽  
M Bayer ◽  
A Kress ◽  
A Forchel ◽  
Y.B Lyanda-Geller ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Electric Field ◽  
Quantum Dot Molecules ◽  
Field Control
Sign in / Sign up

Export Citation Format

Share Document