1995/09/26 by R. J. Radtke, Radtke, R. J., V. N. Kostur +1
Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed Matter (cond-mat) #FOS: Physical sciences #Physics of Superconductivity and Magnetism #Superconductivity in MgB2 and Alloys #cond-mat
paper · pdf · doi:10.48550/arxiv.cond-mat/9509159
7 pages, REVTeX, 3 uuencoded figures
arxiv created 1995/09/26 · openalex publication_date 1995/09/26 · arxiv updated 2009/11/30 · openalex created_date 2022/11/30 · openalex updated_date 2026/07/28
Measurements of the c-axis penetration depth λc in the cuprates reveal a low-temperature T dependence which is inconsistent with simple models of coupling between the CuO2 layers. In this paper, we examine whether a model based on \it incoherent hopping between the layers can account for this low-T behavior. We compute λc directly from linear response theory and compare our results with recent experimental measurements on \rm YBa2u3O7-δ as a function of temperature and doping. We find that the data can be reproduced within this model providing the inter-layer scattering is anisotropic and the pairing is d-wave. In addition, our calculations demonstrate that 1/λc2 is proportional to the c-axis critical current, which seems to be a generic feature in weakly coupled layered superconductors.