Theory of high-temperature superconductivity in a two-layer system: FeSe/SrTiO3

The proposed model can qualitatively describe the occurrence of high-temperature superconductivity in FeSe/SrTiO3. The Hamiltonian of a two-layer system is reduced to a twoband Hamiltonian, taking into account all possible pairing of electrons inside one energy band and electrons in the different en...

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Autores principales:	Palistrant, Maria, Digor, Dumitru, Palistrant, Serghei
Formato:	article
Lenguaje:	EN
Publicado:	D.Ghitu Institute of Electronic Engineering and Nanotechnologies 2018
Materias:	Physics QC1-999 Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/401988c43d1348308898cd63b37d29aa
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spelling	oai:doaj.org-article:401988c43d1348308898cd63b37d29aa2021-11-21T11:56:36ZTheory of high-temperature superconductivity in a two-layer system: FeSe/SrTiO3537.533.352537-63651810-648Xhttps://doaj.org/article/401988c43d1348308898cd63b37d29aa2018-07-01T00:00:00Zhttps://mjps.nanotech.md/archive/2018/article/71446https://doaj.org/toc/1810-648Xhttps://doaj.org/toc/2537-6365The proposed model can qualitatively describe the occurrence of high-temperature superconductivity in FeSe/SrTiO3. The Hamiltonian of a two-layer system is reduced to a twoband Hamiltonian, taking into account all possible pairing of electrons inside one energy band and electrons in the different energy bands. The superconductivity mechanism can be both phononic and electronic. The main factor is the presence of a large number of constants of the electron–electron interactions that contribute to the formation of Cooper pairs and also the possibility of increasing the ratio of densities of electronic energy bands N2/N1 by doping the systems or in some other way. A method for experimental verification of the dominance of interband interactions over intraband interactions is proposed.Palistrant, MariaDigor, DumitruPalistrant, SergheiD.Ghitu Institute of Electronic Engineering and NanotechnologiesarticlePhysicsQC1-999ElectronicsTK7800-8360ENMoldavian Journal of the Physical Sciences, Vol 17, Iss 1-2, Pp 88-94 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronics TK7800-8360
spellingShingle	Physics QC1-999 Electronics TK7800-8360 Palistrant, Maria Digor, Dumitru Palistrant, Serghei Theory of high-temperature superconductivity in a two-layer system: FeSe/SrTiO3
description	The proposed model can qualitatively describe the occurrence of high-temperature superconductivity in FeSe/SrTiO3. The Hamiltonian of a two-layer system is reduced to a twoband Hamiltonian, taking into account all possible pairing of electrons inside one energy band and electrons in the different energy bands. The superconductivity mechanism can be both phononic and electronic. The main factor is the presence of a large number of constants of the electron–electron interactions that contribute to the formation of Cooper pairs and also the possibility of increasing the ratio of densities of electronic energy bands N2/N1 by doping the systems or in some other way. A method for experimental verification of the dominance of interband interactions over intraband interactions is proposed.
format	article
author	Palistrant, Maria Digor, Dumitru Palistrant, Serghei
author_facet	Palistrant, Maria Digor, Dumitru Palistrant, Serghei
author_sort	Palistrant, Maria
title	Theory of high-temperature superconductivity in a two-layer system: FeSe/SrTiO3
title_short	Theory of high-temperature superconductivity in a two-layer system: FeSe/SrTiO3
title_full	Theory of high-temperature superconductivity in a two-layer system: FeSe/SrTiO3
title_fullStr	Theory of high-temperature superconductivity in a two-layer system: FeSe/SrTiO3
title_full_unstemmed	Theory of high-temperature superconductivity in a two-layer system: FeSe/SrTiO3
title_sort	theory of high-temperature superconductivity in a two-layer system: fese/srtio3
publisher	D.Ghitu Institute of Electronic Engineering and Nanotechnologies
publishDate	2018
url	https://doaj.org/article/401988c43d1348308898cd63b37d29aa
work_keys_str_mv	AT palistrantmaria theoryofhightemperaturesuperconductivityinatwolayersystemfesesrtio3 AT digordumitru theoryofhightemperaturesuperconductivityinatwolayersystemfesesrtio3 AT palistrantserghei theoryofhightemperaturesuperconductivityinatwolayersystemfesesrtio3
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Theory of high-temperature superconductivity in a two-layer system: FeSe/SrTiO3

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