Direct interband light absorption in a cylindrical quantum dot in quantizing magnetic field

2004 ◽  
Vol 22 (4) ◽  
pp. 860-866 ◽  
Author(s):  
M.S. Atoyan ◽  
E.M. Kazaryan ◽  
H.A. Sarkisyan
Keyword(s):  
Magnetic Field ◽  
Quantum Dot ◽  
Light Absorption ◽  
Quantizing Magnetic Field ◽  
Interband Light Absorption

scholarly journals Investigation of Light Absorption in a ZnS Quantum Dot

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Hojjatollah K. Salehani ◽  
Maedeh Zakeri
Keyword(s):  
Magnetic Field ◽  
Optical Absorption ◽  
Quantum Dot ◽  
Excited States ◽  
Light Absorption ◽  
Blue Shift ◽  
Optical Absorption Coefficient ◽  
Parabolic Confinement ◽  
Parabolic Confinement Potential ◽  
The Magnetic Field

The light absorption of a ZnS quantum dot with a parabolic confinement potential is studied in this paper in the presence of magnetic field perpendicular to dot plane. The Schrodinger equation of a single electron is solved numerically, and energy spectra and wave functions are obtained. Then, the optical absorption coefficients in transition from ground state to different excited states are calculated. The effects the magnetic field and quantum dot width on the optical absorption are investigated. It is found that the optical absorption coefficient has a blue shift by increasing of magnetic field or confinement strength of quantum dot.

Light Absorption in Semiconductors with Superlattice in Quantizing Magnetic Field

1981 ◽  
Vol 108 (2) ◽  
pp. 559-566 ◽  
Author(s):  
I. A. Chaikovskii ◽  
G. M. Shmelev ◽  
N. A. Enaki
Keyword(s):  
Magnetic Field ◽  
Light Absorption ◽  
Quantizing Magnetic Field

scholarly journals Coefficient of Interband Light Absorption by InAs/GaхIn1-хAs Quantum Dot Superlattice at Low Temperatures

2017 ◽  
Vol 18 (2) ◽  
pp. 151-157
Author(s):  
V.I. Boichuk ◽  
I.V. Bilynsky ◽  
R.I. Pazyuk
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Absorption Coefficient ◽  
Light Absorption ◽  
Low Temperatures ◽  
Dispersion Relations ◽  
Interband Absorption ◽  
Absorption Bands ◽  
Interband Light Absorption

In the paper the InAs/GaxIn1-xAs superlattice system of small size cubic QDs (10 nm) has been considered. Dispersion relations for electron and hole subbands have been calculated for superlattices of different dimensionality. The dependences of the interband absorption coefficient on light frequency, quantum dot size and interdot distance have been researched.It is shown, that the dimension of the superlattice has influence on the shape of the absorption bands and the increasingof the distance between quantum dots is followed by narrowing of the absorption peaks for all three superlatticetypes.

scholarly journals Direct Interband Light Absorption in Conical Quantum Dot

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
D. B. Hayrapetyan ◽  
A. V. Chalyan ◽  
E. M. Kazaryan ◽  
H. A. Sarkisyan
Keyword(s):  
Quantum Dot ◽  
Quantum Number ◽  
Light Absorption ◽  
Principal Quantum Number ◽  
Particle Energy ◽  
Geometrical Parameters ◽  
Quantum Numbers ◽  
Direct Light ◽  
Interband Light Absorption ◽  
Analytical Expressions

In the framework of the adiabatic approximation, the energy states of electron as well as the direct light absorption are investigated in conical quantum dot. Analytical expressions for particle energy spectrum are obtained. The dependence of the absorption edge on geometrical parameters of conical quantum dot is obtained. Selection rules are revealed for transitions between levels with different quantum numbers. In particular, it is shown that for the radial quantum number transitions are allowed between the levels with the same quantum numbers, and any transitions between different levels are allowed for the principal quantum number.

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