Triplanar Model for the Gap and Penetration Depth in YBCO
Superconductivity
2009-10-28 v1
Abstract
YBaCuO_7 is a trilayer material with a unit cell consisting of a CuO_2 bilayer with a CuO plane of chains in between. Starting with a model of isolated planes coupled through a transverse matrix element, we consider the possibility of intra as well as interplane pairing within a nearly antiferromagnetic Fermi liquid model. Solutions of a set of three coupled BCS equations for the gap exhibit orthorhombic symmetry with s- as well as d-wave contributions. The temperature dependence and a-b in plane anisotropy of the resulting penetration depth is discussed and compared with experiment.
Cite
@article{arxiv.cond-mat/9612106,
title = {Triplanar Model for the Gap and Penetration Depth in YBCO},
author = {C. O'Donovan and J. P. Carbotte},
journal= {arXiv preprint arXiv:cond-mat/9612106},
year = {2009}
}
Comments
To appear in Physical Review B1 01Mar97; 12 pages with 10 figures; RevTeX+epsf