Dielectric function spectra from a nondegenerate polaron gas

A Green function formalism is employed to perform an analytical calculation of the dielectric function due to an electron–phonon interaction within a Hartree–Fock approximation. Our theoretical approach is based on the polar or Fröhlich type of electron–phonon interaction, with the electronic hoppin...

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Principais autores:	Barboza, Carlos A., Albuquerque, Eudenilson Lins de, Feitosa, Carlos Chesman de Araújo, Freire, V.N.
Formato:	article
Idioma:	English
Publicado em:	Elsevier
Assuntos:	Small polarons Dielectric response function Electron–phonon interaction Linear response function
Endereço do item:	https://repositorio.ufrn.br/jspui/handle/123456789/29428
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id	ri-123456789-29428
record_format	dspace
spelling	ri-123456789-294282020-07-05T07:47:05Z Dielectric function spectra from a nondegenerate polaron gas Barboza, Carlos A. Albuquerque, Eudenilson Lins de Feitosa, Carlos Chesman de Araújo Freire, V.N. Small polarons Dielectric response function Electron–phonon interaction Linear response function A Green function formalism is employed to perform an analytical calculation of the dielectric function due to an electron–phonon interaction within a Hartree–Fock approximation. Our theoretical approach is based on the polar or Fröhlich type of electron–phonon interaction, with the electronic hopping between the first-neighbor, to characterize the polaron model. Our numerical results for the dielectric function profile show resonant peaks, all of them at lower frequencies than the main one, attributed to the polaron crossover regime between the quasi free-electrons and the small polarons 2020-07-03T14:02:52Z 2020-07-03T14:02:52Z 2007-02-07 article BARBOZA, Carlos Alberto ; ALBUQUERQUE, Eudenilson Lins de ; FEITOSA, Carlos Chesman de Araújo; FREIRE, Valder . Dielectric Function Spectra from a Nondegenerate Polaron Gas. Physics Letters A, v. 365, p. 478-482, 2007. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0375960107001673. Acesso em: 17 maio 2020. https://doi.org/10.1016/j.physleta.2007.01.043 https://repositorio.ufrn.br/jspui/handle/123456789/29428 10.1016/j.physleta.2007.01.043 0375-9601 en Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ application/pdf Elsevier
institution	Repositório Institucional
collection	RI - UFRN
language	English
topic	Small polarons Dielectric response function Electron–phonon interaction Linear response function
spellingShingle	Small polarons Dielectric response function Electron–phonon interaction Linear response function Barboza, Carlos A. Albuquerque, Eudenilson Lins de Feitosa, Carlos Chesman de Araújo Freire, V.N. Dielectric function spectra from a nondegenerate polaron gas
description	A Green function formalism is employed to perform an analytical calculation of the dielectric function due to an electron–phonon interaction within a Hartree–Fock approximation. Our theoretical approach is based on the polar or Fröhlich type of electron–phonon interaction, with the electronic hopping between the first-neighbor, to characterize the polaron model. Our numerical results for the dielectric function profile show resonant peaks, all of them at lower frequencies than the main one, attributed to the polaron crossover regime between the quasi free-electrons and the small polarons
format	article
author	Barboza, Carlos A. Albuquerque, Eudenilson Lins de Feitosa, Carlos Chesman de Araújo Freire, V.N.
author_facet	Barboza, Carlos A. Albuquerque, Eudenilson Lins de Feitosa, Carlos Chesman de Araújo Freire, V.N.
author_sort	Barboza, Carlos A.
title	Dielectric function spectra from a nondegenerate polaron gas
title_short	Dielectric function spectra from a nondegenerate polaron gas
title_full	Dielectric function spectra from a nondegenerate polaron gas
title_fullStr	Dielectric function spectra from a nondegenerate polaron gas
title_full_unstemmed	Dielectric function spectra from a nondegenerate polaron gas
title_sort	dielectric function spectra from a nondegenerate polaron gas
publisher	Elsevier
publishDate	2020
url	https://repositorio.ufrn.br/jspui/handle/123456789/29428
work_keys_str_mv	AT barbozacarlosa dielectricfunctionspectrafromanondegeneratepolarongas AT albuquerqueeudenilsonlinsde dielectricfunctionspectrafromanondegeneratepolarongas AT feitosacarloschesmandearaujo dielectricfunctionspectrafromanondegeneratepolarongas AT freirevn dielectricfunctionspectrafromanondegeneratepolarongas
_version_	1773966580240089088

Dielectric function spectra from a nondegenerate polaron gas

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