On Iachello's model of cuprate superconductors

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

Research output: Contribution to journalArticlepeer-review


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 languageEnglish
Pages (from-to)533-539
Number of pages7
JournalPhilosophical Magazine Letters
Issue number8
StatePublished - 1 Aug 2007
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics


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