Pairing mechanism for the high-TC superconductivity: symmetries and thermodynamic properties.

The pairing mechanism for the high-Tc superconductors based on the electron-phonon (EPH) and electron-electron-phonon (EEPH) interactions has been presented. On the fold mean-field level, it has been proven, that the obtained s-wave model supplements the predictions based on the BCS van Hove scenari...

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Autor principal:	Radosław Szczęśniak
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b32d80acf29f46d4b60d34d3b79cc537
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spelling	oai:doaj.org-article:b32d80acf29f46d4b60d34d3b79cc5372021-11-18T07:21:52ZPairing mechanism for the high-TC superconductivity: symmetries and thermodynamic properties.1932-620310.1371/journal.pone.0031873https://doaj.org/article/b32d80acf29f46d4b60d34d3b79cc5372012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22529891/?tool=EBIhttps://doaj.org/toc/1932-6203The pairing mechanism for the high-Tc superconductors based on the electron-phonon (EPH) and electron-electron-phonon (EEPH) interactions has been presented. On the fold mean-field level, it has been proven, that the obtained s-wave model supplements the predictions based on the BCS van Hove scenario. In particular: (i) For strong EEPH coupling and T < T(C) the energy gap (Δtot) is very weak temperature dependent; up to the critical temperature Δtot extends into the anomalous normal state to the Nernst temperature. (ii) The model explains well the experimental dependence of the ratio R(1) ≡ 2Δ(tot)(0)/k(B)T(C) on doping for the reported superconductors in the terms of the few fundamental parameters. In the presented paper, the properties of the d-wave superconducting state in the two-dimensional system have been also studied. The obtained results, like for s-wave, have shown the energy gap amplitude crossover from the BCS to non-BCS behavior, as the value of the EEPH potential increases. However, for T > T(C) the energy gap amplitude extends into the anomalous normal state to the pseudogap temperature. Finally, it has been presented that the anisotropic model explains the dependence of the ratio R(1) on doping for the considered superconductors.Radosław SzczęśniakPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 4, p e31873 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Radosław Szczęśniak Pairing mechanism for the high-TC superconductivity: symmetries and thermodynamic properties.
description	The pairing mechanism for the high-Tc superconductors based on the electron-phonon (EPH) and electron-electron-phonon (EEPH) interactions has been presented. On the fold mean-field level, it has been proven, that the obtained s-wave model supplements the predictions based on the BCS van Hove scenario. In particular: (i) For strong EEPH coupling and T < T(C) the energy gap (Δtot) is very weak temperature dependent; up to the critical temperature Δtot extends into the anomalous normal state to the Nernst temperature. (ii) The model explains well the experimental dependence of the ratio R(1) ≡ 2Δ(tot)(0)/k(B)T(C) on doping for the reported superconductors in the terms of the few fundamental parameters. In the presented paper, the properties of the d-wave superconducting state in the two-dimensional system have been also studied. The obtained results, like for s-wave, have shown the energy gap amplitude crossover from the BCS to non-BCS behavior, as the value of the EEPH potential increases. However, for T > T(C) the energy gap amplitude extends into the anomalous normal state to the pseudogap temperature. Finally, it has been presented that the anisotropic model explains the dependence of the ratio R(1) on doping for the considered superconductors.
format	article
author	Radosław Szczęśniak
author_facet	Radosław Szczęśniak
author_sort	Radosław Szczęśniak
title	Pairing mechanism for the high-TC superconductivity: symmetries and thermodynamic properties.
title_short	Pairing mechanism for the high-TC superconductivity: symmetries and thermodynamic properties.
title_full	Pairing mechanism for the high-TC superconductivity: symmetries and thermodynamic properties.
title_fullStr	Pairing mechanism for the high-TC superconductivity: symmetries and thermodynamic properties.
title_full_unstemmed	Pairing mechanism for the high-TC superconductivity: symmetries and thermodynamic properties.
title_sort	pairing mechanism for the high-tc superconductivity: symmetries and thermodynamic properties.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/b32d80acf29f46d4b60d34d3b79cc537
work_keys_str_mv	AT radosławszczesniak pairingmechanismforthehightcsuperconductivitysymmetriesandthermodynamicproperties
_version_	1718423557152702464

Pairing mechanism for the high-TC superconductivity: symmetries and thermodynamic properties.

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