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Bipolarons in anisotropic crystals and low dimensional structures

Bipolarons in anisotropic crystals and low dimensional structures

We consider a simple bipolaron approach to description of anisotropic crystals in the strongcoupling limit. We have taken into account anisotropy of effective band masses and dielectric constants of crystals. The calculations of energy for two - electron system was fulfiled using wave functions chos...

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Main Authors: Kashirina, N.I., Mozdor, E.V., Pashitskij, E.A., Sheka, V.I.
Format: Article
Language:English
Published: Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України 1999
Series:Semiconductor Physics Quantum Electronics & Optoelectronics
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/119857
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spelling irk-123456789-1198572017-06-11T03:02:33Z Bipolarons in anisotropic crystals and low dimensional structures Kashirina, N.I. Mozdor, E.V. Pashitskij, E.A. Sheka, V.I. We consider a simple bipolaron approach to description of anisotropic crystals in the strongcoupling limit. We have taken into account anisotropy of effective band masses and dielectric constants of crystals. The calculations of energy for two - electron system was fulfiled using wave functions chosen as a linear combination of gaussian orbitals, what enables us to easily estimate the electron correlation effects which can play a key role. Bipolaron formation should be quite possible in crystals with hightemperature superconductivity. We have considered an example of La₂CuO₄,, in which there is a great anisotropy of effective masses and dielectric permittivities, where in the limiting case of the maximum anisotropy of effective masses mxy << mz the bipolaron binding energy is 25 % of the polaron energy. 1999 Article Bipolarons in anisotropic crystals and low dimensional structures / N.I. Kashirina, E.V. Mozdor, E.A. Pashitskij, V.I. Sheka // Semiconductor Physics Quantum Electronics & Optoelectronics. — 1999. — Т. 2, № 2. — С. 7-10. — Бібліогр.: 13 назв. — англ. 1560-8034 PACS 71.38, 73.20.D, 74.80.D http://dspace.nbuv.gov.ua/handle/123456789/119857 en Semiconductor Physics Quantum Electronics & Optoelectronics Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
description We consider a simple bipolaron approach to description of anisotropic crystals in the strongcoupling limit. We have taken into account anisotropy of effective band masses and dielectric constants of crystals. The calculations of energy for two - electron system was fulfiled using wave functions chosen as a linear combination of gaussian orbitals, what enables us to easily estimate the electron correlation effects which can play a key role. Bipolaron formation should be quite possible in crystals with hightemperature superconductivity. We have considered an example of La₂CuO₄,, in which there is a great anisotropy of effective masses and dielectric permittivities, where in the limiting case of the maximum anisotropy of effective masses mxy << mz the bipolaron binding energy is 25 % of the polaron energy.
format Article
author Kashirina, N.I.
Mozdor, E.V.
Pashitskij, E.A.
Sheka, V.I.
spellingShingle Kashirina, N.I.
Mozdor, E.V.
Pashitskij, E.A.
Sheka, V.I.
Bipolarons in anisotropic crystals and low dimensional structures
Semiconductor Physics Quantum Electronics & Optoelectronics
author_facet Kashirina, N.I.
Mozdor, E.V.
Pashitskij, E.A.
Sheka, V.I.
author_sort Kashirina, N.I.
title Bipolarons in anisotropic crystals and low dimensional structures
title_short Bipolarons in anisotropic crystals and low dimensional structures
title_full Bipolarons in anisotropic crystals and low dimensional structures
title_fullStr Bipolarons in anisotropic crystals and low dimensional structures
title_full_unstemmed Bipolarons in anisotropic crystals and low dimensional structures
title_sort bipolarons in anisotropic crystals and low dimensional structures
publisher Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
publishDate 1999
url http://dspace.nbuv.gov.ua/handle/123456789/119857
citation_txt Bipolarons in anisotropic crystals and low dimensional structures / N.I. Kashirina, E.V. Mozdor, E.A. Pashitskij, V.I. Sheka // Semiconductor Physics Quantum Electronics & Optoelectronics. — 1999. — Т. 2, № 2. — С. 7-10. — Бібліогр.: 13 назв. — англ.
series Semiconductor Physics Quantum Electronics & Optoelectronics
work_keys_str_mv AT kashirinani bipolaronsinanisotropiccrystalsandlowdimensionalstructures
AT mozdorev bipolaronsinanisotropiccrystalsandlowdimensionalstructures
AT pashitskijea bipolaronsinanisotropiccrystalsandlowdimensionalstructures
AT shekavi bipolaronsinanisotropiccrystalsandlowdimensionalstructures
first_indexed 2023-10-18T20:34:14Z
last_indexed 2023-10-18T20:34:14Z
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