Enhanced pairing interaction in a two-band model

O. Entin-Wohlman; Y. Imry

doi:10.1088/0953-8984/1/45/027

Enhanced pairing interaction in a two-band model

O. Entin-Wohlman, Y. Imry

Research output: Contribution to journal › Article › peer-review

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Abstract

The Kondo picture for the electron-electron attraction due to transfer of pairs of electrons between two bands is investigated. This interaction may reduce the Coulomb repulsion considerably, leading to enhancement of the superconducting transition temperature and a substantial weakening of the isotope effect. The special screening effect is large when the empty band is narrow and the energy gap between the two bands is small. Possible relevance to the superconducting oxides is suggested.

Original language	English
Article number	027
Pages (from-to)	9045-9049
Number of pages	5
Journal	Journal of Physics: Condensed Matter
Volume	1
Issue number	45
DOIs	https://doi.org/10.1088/0953-8984/1/45/027
State	Published - 1 Dec 1989
Externally published	Yes

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

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10.1088/0953-8984/1/45/027

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title = "Enhanced pairing interaction in a two-band model",

abstract = "The Kondo picture for the electron-electron attraction due to transfer of pairs of electrons between two bands is investigated. This interaction may reduce the Coulomb repulsion considerably, leading to enhancement of the superconducting transition temperature and a substantial weakening of the isotope effect. The special screening effect is large when the empty band is narrow and the energy gap between the two bands is small. Possible relevance to the superconducting oxides is suggested.",

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AB - The Kondo picture for the electron-electron attraction due to transfer of pairs of electrons between two bands is investigated. This interaction may reduce the Coulomb repulsion considerably, leading to enhancement of the superconducting transition temperature and a substantial weakening of the isotope effect. The special screening effect is large when the empty band is narrow and the energy gap between the two bands is small. Possible relevance to the superconducting oxides is suggested.

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Enhanced pairing interaction in a two-band model

Abstract

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