Pre-formed Cooper pairs and Bose-Einstein condensation in cuprate superconductors

M. Casas; M. de Llano; A. Puente; A. Rigo; M. A. Solís

doi:10.1016/S0022-3697(02)00218-4

paper

Pre-formed Cooper pairs and Bose-Einstein condensation in cuprate superconductors

arXiv:cond-mat/0110391 · doi:10.1016/S0022-3697(02)00218-4

Abstract

A two-dimensional (2D) assembly of noninteracting, temperature-dependent, pre-formed Cooper pairs in chemical/thermal equilibrium with unpaired fermions is examined in a binary boson-fermion statistical model as the Bose-Einstein condensation (BEC) singularity temperature $T_{c}$ is approached from above. Compared with BCS theory (which is {\it not} a BEC theory) substantially higher $T_{c}$ 's are obtained without any adjustable parameters, that fall roughly within the range of empirical $T_{c}$ 's for quasi-2D cuprate superconductors.

4 pages