Scaling between superconducting critical temperature and structural coherence length in films
Département de Physique, Ecole Polytechnique Fédérale de Lausanne (EPFL)
1015 Lausanne, Switzerland
2 MASPEC-Consiglio Nazionale delle Ricerche - Parco Area delle Scienze 37a 43010 Parma-Fontanini, Italy
Accepted: 21 July 2000
Measurements of critical temperature in superconducting films with reduced long-range structural order show the validity of the empirical scaling relation between disorder-induced reduction of and structural coherence length in the ab-plane. This result is quantitatively explained by the disorder-induced confinement of the charge carriers within each ordered domain of size . Our analysis of the data based on this picture enables us to precisely determine the Ginzburg-Landau superconducting coherence length in the ab-plane, .
PACS: 74.62.-c – Transition temperature variations / 61.43.-j – Disordered solids / 74.72.-h – High- compounds
© EDP Sciences, 2000