Physics – Condensed Matter – Superconductivity
Scientific paper
1996-12-16
Physica C, 290 (1997) 215
Physics
Condensed Matter
Superconductivity
11 pages, revtex, 6 figures
Scientific paper
10.1016/S0921-4534(97)01647-X
We have studied the penetration depth for a model of $YBa_{2}Cu_{3}O_{7}$ involving pairing both in the $CuO_{2}$ planes and in the CuO chains. In this model pairing in the planes is due to an attractive interaction, while Coulomb repulsion induces in the chains an order parameter with opposite sign. Due to the anticrossing produced by hybridization between planes and chains, one obtains a d-wave like order parameter which changes sign on a single sheet of the Fermi surface and has nodes in the gap. We find that our model accounts quite well for the anisotropy of the penetration depth and for the absolute values. We reproduce fairly well the whole temperature dependence for both the a and the b directions, including the linear dependence at low temperature. We use a set of parameters which are all quite reasonable physically. Our results for the c direction are also satisfactory, although the situation is less clear both experimentally and theoretically.
Combescot Roland
Leyronas Xavier
No associations
LandOfFree
Plane - Chain coupling in YBa_{2}Cu_{3}O_{7} : temperature dependence of the penetration depth does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Plane - Chain coupling in YBa_{2}Cu_{3}O_{7} : temperature dependence of the penetration depth, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plane - Chain coupling in YBa_{2}Cu_{3}O_{7} : temperature dependence of the penetration depth will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-605499