Archive: 2011 - Moldavian Journal of the Physical Sciences

05 Feb 2011

2011
V. 10
1
(p.5 - 11)

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

Authors:

Adam, Gheorghe; Adam, S.

Summary:

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.

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BibTeX

@article{ibn_4297,
author = {Adam, G. and Adam, S.},
title = {Modified two-band two-dimensional hubbard model for the description of the high critical temperature superconducting phase transition in cuprates},
journal = {Moldavian Journal of the Physical Sciences},
year = {2011},
volume = {10 (1)},
pages = {5-11},
month = {Feb},
abstract = {(EN) 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. },
url = {https://ibn.idsi.md/vizualizare_articol/4297},
}

DataCite

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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 
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<dc:date>2011-02-05</dc:date>
<dc:description xml:lang='en'>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. </dc:description>
<dc:source>Moldavian Journal of the Physical Sciences 10 (1) 5-11</dc:source>
<dc:title>Modified two-band two-dimensional hubbard model for the description of the high critical temperature superconducting phase transition in cuprates</dc:title>
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“ ... ”

SM ISO690:2012

ADAM, Gheorghe; ADAM, S.. Modified two-band two-dimensional hubbard model for the description of the high critical temperature superconducting phase transition in cuprates. In: Moldavian Journal of the Physical Sciences. 2011, nr. 1(10), pp. 5-11. ISSN 1810-648X.