High temperature superconductivity in dimer array systems

Details High temperature superconductivity in dimer array systems High temperature superconductivity in dimer array systems

2002-06-12

arxiv.org/abs/cond-mat/0206204v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 9 figures

Scientific paper

10.1103/PhysRevB.66.184508

Superconductivity in the Hubbard model is studied on a series of lattices in which dimers are coupled in various types of arrays. Using fluctuation exchange method and solving the linearized Eliashberg equation, the transition temperature $T_c$ of these systems is estimated to be much higher than that of the Hubbard model on a simple square lattice, which is a model for the high $T_c$ cuprates. We conclude that these `dimer array' systems can generally exhibit superconductivity with very high $T_c$. Not only $d$-electron systems, but also $p$-electron systems may provide various stages for realizing the present mechanism.

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