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Technology News Focus
June 23, 2010
NANOSTRUCTURES;
Research from Yerevan State University yields new data on nanostructures
"The effect of interdiffusion of Al and Ga atoms on confining
potential, band structure and electromagnetic radiation's absorption
coefficient of three dimensional superlattice, composed of initially
spherical GaAs/Ga1-xAlxAs quantum dots is investigated in the
framework of the modified Wood-Saxson potential model," scientists
writing in the journal Physica E - Low - Dimensional Systems &
Nanostructures report.
"It is shown that the interdiffusion leads to the disappearance of
quantum dots' spherical symmetry, to the widening of the energy
minibands and to the significant decrease in the interband absorption
coefficient," wrote V.L.A. Aghchegala and colleagues, Yerevan State
University.
The researchers concluded: "The obtained results indicate the
opportunity to take into account the interdiffusion in the
calculations of different characteristics of superlattices."
Aghchegala and colleagues published their study in Physica E - Low -
Dimensional Systems & Nanostructures (Effect of interdiffusion on
electronic states and absorption coefficient of semiconductor
superlattice of cubic symmetry. Physica E - Low - Dimensional Systems
& Nanostructures, 2010;42(7):1950-1953).
Additional information can be obtained by contacting V.L.A.
Aghchegala, Yerevan State University, Dept. of Solid State Physics, Al
Manookian 1, Yerevan 0025, Armenia.
The publisher of the journal Physica E - Low - Dimensional Systems &
Nanostructures can be contacted at: Elsevier Science BV, PO Box 211,
1000 AE Amsterdam, Netherlands.
From: A. Papazian
June 23, 2010
NANOSTRUCTURES;
Research from Yerevan State University yields new data on nanostructures
"The effect of interdiffusion of Al and Ga atoms on confining
potential, band structure and electromagnetic radiation's absorption
coefficient of three dimensional superlattice, composed of initially
spherical GaAs/Ga1-xAlxAs quantum dots is investigated in the
framework of the modified Wood-Saxson potential model," scientists
writing in the journal Physica E - Low - Dimensional Systems &
Nanostructures report.
"It is shown that the interdiffusion leads to the disappearance of
quantum dots' spherical symmetry, to the widening of the energy
minibands and to the significant decrease in the interband absorption
coefficient," wrote V.L.A. Aghchegala and colleagues, Yerevan State
University.
The researchers concluded: "The obtained results indicate the
opportunity to take into account the interdiffusion in the
calculations of different characteristics of superlattices."
Aghchegala and colleagues published their study in Physica E - Low -
Dimensional Systems & Nanostructures (Effect of interdiffusion on
electronic states and absorption coefficient of semiconductor
superlattice of cubic symmetry. Physica E - Low - Dimensional Systems
& Nanostructures, 2010;42(7):1950-1953).
Additional information can be obtained by contacting V.L.A.
Aghchegala, Yerevan State University, Dept. of Solid State Physics, Al
Manookian 1, Yerevan 0025, Armenia.
The publisher of the journal Physica E - Low - Dimensional Systems &
Nanostructures can be contacted at: Elsevier Science BV, PO Box 211,
1000 AE Amsterdam, Netherlands.
From: A. Papazian