On Iachello's model of cuprate superconductors

Y. Krivolapov; A. Mann; J. L. Birman

doi:10.1080/09500830701280931

On Iachello's model of cuprate superconductors

Y. Krivolapov, A. Mann, J. L. Birman

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

Abstract

A U(3) model proposed by Iachello for superconductivity in cuprate materials is analyzed. The model consists of s and d pairs (approximated as bosons) in a two-dimensional Fermi system with a surface. The transition occurs between a phase in which the system is a condensate of one type of boson, and a phase which is a mixture of two types of bosons. In the current work we have investigated the validity of the Bogoliubov approximation, and we used a reduced Hamiltonian to determine a phase diagram, the symmetry of the phases, and the temperature dependence of the heat capacity.

Original language	English
Pages (from-to)	533-539
Number of pages	7
Journal	Philosophical Magazine Letters
Volume	87
Issue number	8
DOIs	https://doi.org/10.1080/09500830701280931
State	Published - 1 Aug 2007
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics

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10.1080/09500830701280931

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AB - A U(3) model proposed by Iachello for superconductivity in cuprate materials is analyzed. The model consists of s and d pairs (approximated as bosons) in a two-dimensional Fermi system with a surface. The transition occurs between a phase in which the system is a condensate of one type of boson, and a phase which is a mixture of two types of bosons. In the current work we have investigated the validity of the Bogoliubov approximation, and we used a reduced Hamiltonian to determine a phase diagram, the symmetry of the phases, and the temperature dependence of the heat capacity.

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On Iachello's model of cuprate superconductors

Abstract

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