Two-dimensional Bose-Einstein Condensation in Cuprate Superconductors
Superconductivity
2009-11-07 v1
Abstract
Transition temperatures calculated using the BCS model electron-phonon interaction without any adjustable parameters agree with empirical values for quasi-2D cuprate superconductors. They follow from a two-dimensional gas of temperature-dependent Cooper pairs in chemical and thermal equilibrium with unpaired fermions in a boson-fermion (BF) statistical model as the Bose-Einstein condensation (BEC) singularity temperature is approached from above. The {\it linear} (as opposed to quadratic) boson dispersion relation due to the Fermi sea yields substantially higher 's with the BF model than with BCS or pure-boson BEC theories.
Cite
@article{arxiv.cond-mat/0110383,
title = {Two-dimensional Bose-Einstein Condensation in Cuprate Superconductors},
author = {M. Casas and M. de Llano and A. Puente and A. Rigo and M. A. Solis},
journal= {arXiv preprint arXiv:cond-mat/0110383},
year = {2009}
}
Comments
7 pages including 2 figures