Pressure dependence of T-c to 17 GPa with and without relaxation effects in superconducting YBa2Cu3Ox

Authors
Sadewasser, S Schilling, JS Paulikas, AP Veal, BW
Citation
S. Sadewasser et al., Pressure dependence of T-c to 17 GPa with and without relaxation effects in superconducting YBa2Cu3Ox, PHYS REV B, 61(1), 2000, pp. 741-749
Citations number
30
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
10980121 → ACNP
Volume
61
Issue
1
Year of publication
2000
Pages
741 - 749
Database
ISI
SICI code
1098-0121(20000101)61:1<741:PDOTT1>2.0.ZU;2-R
Abstract
Hydrostatic high-pressure studies to 17 GPa were carried out on superconduc ting YBa2Cu3Ox over the full range of oxygen content x. The observed bell-s haped T-c(P) dependences are found to depend markedly on the temperature at which the pressure is changed. The time-dependent relaxation processes are studied using both T-c and the electrical resistivity at 298 K as probes. The activation volume for oxygen diffusion is determined from the pressure- dependent activation energy and compared with estimates from a simple hard- sphere model.