Exciton and donor binding energies in quantum-well wires and quantum dots a fractional-dimensional space approach

2004 ◽  
Vol 13 (5) ◽  
pp. 759-764
Author(s):  
Li Hong ◽  
Kong Xiao-Jun
Keyword(s):  
Quantum Dots ◽  
Quantum Well ◽  
Dimensional Space ◽  
Binding Energies ◽  
Quantum Well Wires ◽  
Space Approach

On the scaling of exciton and impurity binding energies and the virial theorem in semiconductor quantum wells and quantum-well wires

2001 ◽  
Vol 692 ◽  
Author(s):  
M. de Leyva-Dios ◽  
L. E. Oliveira
Keyword(s):  
Wave Function ◽  
Quantum Well ◽  
Quantum Wells ◽  
Virial Theorem ◽  
Dimensional Space ◽  
Shallow Donor ◽  
Binding Energies ◽  
Bohr Radius ◽  
Semiconductor Quantum Wells ◽  
Quantum Well Wires

AbstractWe have used the variational and fractional-dimensional space approaches in a study of the virial theorem value and scaling of the shallow-donor binding energies versus donor Bohr radiusin GaAs-(Ga,Al)As semiconductor quantum wells and quantum-well wires. A comparison is made with previous results with respect to exciton states. In the case the donor ground-state wave function may be approximated by a D-dimensional hydrogenic wave function, the virial theorem value equals 2 and the scaling rule for the donor binding energy versus quantum-sized Bohr radius is hyperbolic, both for quantum wells and wires. In contrast, calculations within the variational scheme show that the scaling of the donor binding energies with quantum-sized Bohr radius is in general nonhyperbolic and that the virial theorem value is nonconstant.

Thermoelectric Power in Quantum Confined Bismuth Under Classically Large Magnetic Field

1990 ◽  
Vol 216 ◽  
Author(s):  
Kamakhya P. Ghatak ◽  
S. N. Biswas
Keyword(s):  
Magnetic Field ◽  
Quantum Dots ◽  
Quantum Well ◽  
Film Thickness ◽  
Quantum Wells ◽  
Thermoelectric Power ◽  
Large Magnetic Field ◽  
Quantum Well Wires ◽  
Electron Dispersion ◽  
Theoretical Results

ABSTRACTIn this paper we studied the thermoelectric power under classically large magnetic field (TPM) in quantum wells (QWs), quantum well wires (QWWS) and quantum dots (QDs) of Bi by formulating the respective electron dispersion laws. The TPM increases with increasing film thickness in an oscillatory manner in all the cases. The TPM in QD is greatest and the least for quantum wells respectively. The theoretical results are in agreement with the experimental observations as reported elsewhere.

Binding Energies of Excitons in Square Quantum-Well Wires in the Presence of a Magnetic Field

2004 ◽  
Vol 21 (1) ◽  
pp. 166-169 ◽  
Author(s):  
Zhang Ying-Tao ◽  
Di Bing ◽  
Xie Zun ◽  
Li You-Cheng
Keyword(s):  
Magnetic Field ◽  
Quantum Well ◽  
Binding Energies ◽  
Quantum Well Wires

Binding energies and density of impurity states of shallow hydrogenic impurities in cylindrical quantum-well wires

1991 ◽  
Vol 43 (2) ◽  
pp. 1824-1827 ◽  
Author(s):  
N. Porras Montenegro ◽  
J. López-Gondar ◽  
L. E. Oliveira
Keyword(s):  
Quantum Well ◽  
Binding Energies ◽  
Impurity States ◽  
Quantum Well Wires
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