Modified two-band two-dimensional hubbard model for the description of the high critical temperature superconducting phase transition in cuprates

A progress report on the development of numerical and rigorous solutions of the effective two-band two-dimensional Hubbard model of the high-temperature superconductivity in cuprates [N.M. Plakida et al., PRB 51, 16599 (1995)], within the equation of motion technique of the thermodyna...

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Autores principales:	Adam, Gheorghe, Adam, S.
Formato:	article
Lenguaje:	EN
Publicado:	D.Ghitu Institute of Electronic Engineering and Nanotechnologies 2011
Materias:	Physics QC1-999 Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/a94ca3e21cc24902af8c8760acc54777
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spelling	oai:doaj.org-article:a94ca3e21cc24902af8c8760acc547772021-11-21T12:02:42ZModified two-band two-dimensional hubbard model for the description of the high critical temperature superconducting phase transition in cuprates2537-63651810-648Xhttps://doaj.org/article/a94ca3e21cc24902af8c8760acc547772011-02-01T00:00:00Zhttps://mjps.nanotech.md/archive/2011/article/4297https://doaj.org/toc/1810-648Xhttps://doaj.org/toc/2537-6365A progress report on the development of numerical and rigorous solutions of the effective two-band two-dimensional Hubbard model of the high-temperature superconductivity in cuprates [N.M. Plakida et al., PRB 51, 16599 (1995)], within the equation of motion technique of the thermodynamic Green function approach, is given. Four important consequences of the rigorous mean-field solution are worth mentioning: (1) Occurrence, both in the normal and superconducting states, of the spin-charge separation, conjectured by P.W. Anderson on intuitive grounds. (2) Origin of the static d-wave pairing in the hopping singlet conduction. (3) Complete suppression of the s-type superconducting pairing by the crystal symmetry in square two- dimensional lattices and occurrence of a residual s-type term in rectangular lattices, in agreement with the experiment. (4) The energy band hybridization in the superconducting state points to an overall displacement of the energy spectrum toward lower energies, as pointed by very precise optical measurements. Adam, GheorgheAdam, S.D.Ghitu Institute of Electronic Engineering and NanotechnologiesarticlePhysicsQC1-999ElectronicsTK7800-8360ENMoldavian Journal of the Physical Sciences, Vol 10, Iss 1, Pp 5-11 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronics TK7800-8360
spellingShingle	Physics QC1-999 Electronics TK7800-8360 Adam, Gheorghe Adam, S. Modified two-band two-dimensional hubbard model for the description of the high critical temperature superconducting phase transition in cuprates
description	A progress report on the development of numerical and rigorous solutions of the effective two-band two-dimensional Hubbard model of the high-temperature superconductivity in cuprates [N.M. Plakida et al., PRB 51, 16599 (1995)], within the equation of motion technique of the thermodynamic Green function approach, is given. Four important consequences of the rigorous mean-field solution are worth mentioning: (1) Occurrence, both in the normal and superconducting states, of the spin-charge separation, conjectured by P.W. Anderson on intuitive grounds. (2) Origin of the static d-wave pairing in the hopping singlet conduction. (3) Complete suppression of the s-type superconducting pairing by the crystal symmetry in square two- dimensional lattices and occurrence of a residual s-type term in rectangular lattices, in agreement with the experiment. (4) The energy band hybridization in the superconducting state points to an overall displacement of the energy spectrum toward lower energies, as pointed by very precise optical measurements.
format	article
author	Adam, Gheorghe Adam, S.
author_facet	Adam, Gheorghe Adam, S.
author_sort	Adam, Gheorghe
title	Modified two-band two-dimensional hubbard model for the description of the high critical temperature superconducting phase transition in cuprates
title_short	Modified two-band two-dimensional hubbard model for the description of the high critical temperature superconducting phase transition in cuprates
title_full	Modified two-band two-dimensional hubbard model for the description of the high critical temperature superconducting phase transition in cuprates
title_fullStr	Modified two-band two-dimensional hubbard model for the description of the high critical temperature superconducting phase transition in cuprates
title_full_unstemmed	Modified two-band two-dimensional hubbard model for the description of the high critical temperature superconducting phase transition in cuprates
title_sort	modified two-band two-dimensional hubbard model for the description of the high critical temperature superconducting phase transition in cuprates
publisher	D.Ghitu Institute of Electronic Engineering and Nanotechnologies
publishDate	2011
url	https://doaj.org/article/a94ca3e21cc24902af8c8760acc54777
work_keys_str_mv	AT adamgheorghe modifiedtwobandtwodimensionalhubbardmodelforthedescriptionofthehighcriticaltemperaturesuperconductingphasetransitionincuprates AT adams modifiedtwobandtwodimensionalhubbardmodelforthedescriptionofthehighcriticaltemperaturesuperconductingphasetransitionincuprates
_version_	1718419322205896704

Modified two-band two-dimensional hubbard model for the description of the high critical temperature superconducting phase transition in cuprates

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