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97 results on '"Kazaryan, E. M."'

51. Band Gap and Density of States of Multiwalled Boron Nitride Nanotubes.

Author

Danglyan, I. M., Hayrapetyan, D. B., and Kazaryan, E. M.

Subjects
DENSITY of states, BORON nitride, DENSITY functional theory, NANOTUBES
Abstract

Copyright of National Academy of Sciences of Armenia Reports / Doklady Nacionalnaâ Akademiâ Nauk Armenii is the property of National Academy of Sciences of the Republic of Armenia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2019

83. Direct Interband Light Absorption in Strongly Prolated Ellipsoidal Quantum Dots’ Ensemble.

Author

Dvoyan, K. G., Hayrapetyan, D. B., and Kazaryan, E. M.

Subjects
LIGHT absorption, QUANTUM dots, APPROXIMATION theory, GEOMETRIC quantization, DISTRIBUTION (Probability theory), QUANTUM electronics
Abstract

Within the framework of adiabatic approximation, the energy levels and direct interband light absorption in a strongly prolated ellipsoidal quantum dot are studied. Analytical expressions for the particle energy spectrum and absorption threshold frequencies in three regimes of quantization are obtained. Selection rules for quantum transitions are revealed. Absorption edge and absorption coefficient for three regimes of size quantization (SQ) are also considered. To facilitate the comparison of obtained results with the probable experimental data, size dispersion distribution of growing quantum dots by the small semiaxe in the regimes of strong and weak SQ by two experimentally realizing distribution functions have been taken into account. Distribution functions of Lifshits–Slezov and Gaussian have been considered. [ABSTRACT FROM AUTHOR]

Published
2009
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85. Direct interband light absorption in strongly prolated ellipsoidal quantum dots' ensemble with modified Pöschl-Teller effective potential

Author

Dvoyan, K. G., Hayrapetyan, D. B., Kazaryan, E. M., and Tshantshapanyan, A. A.

Abstract

Within the framework of adiabatic approximation the energy levels and direct interband light absorption in a strongly prolated ellipsoidal quantum dot are studied. For treatment of the "slow" subsystem modified Pöschl-Teller effective potential is used. It is shown that the low-energy levels of the spectrum are equidistant. Analytical expressions for the particle energy spectrum and absorption threshold frequencies in strong quantization regime are obtained. Selection rules for quantum transitions, absorption edge and absorption coefficient are revealed. Size dispersion distribution of quantum dots by the minor semiaxe by two experimentally realizing distribution, Lifshits-Slezov and Gaussian functions, have been taken into account.

Published
2010
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97. Direct Interband Light Absorption in Strongly Prolated Ellipsoidal Quantum Dots' Ensemble.

Author

Dvoyan KG, Hayrapetyan DB, and Kazaryan EM

Abstract

Within the framework of adiabatic approximation, the energy levels and direct interband light absorption in a strongly prolated ellipsoidal quantum dot are studied. Analytical expressions for the particle energy spectrum and absorption threshold frequencies in three regimes of quantization are obtained. Selection rules for quantum transitions are revealed. Absorption edge and absorption coefficient for three regimes of size quantization (SQ) are also considered. To facilitate the comparison of obtained results with the probable experimental data, size dispersion distribution of growing quantum dots by the small semiaxe in the regimes of strong and weak SQ by two experimentally realizing distribution functions have been taken into account. Distribution functions of Lifshits-Slezov and Gaussian have been considered.

Published
2008
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