| Issue |
Europhys. Lett.
Volume 48, Number 1, October I 1999
|
|
|---|---|---|
| Page(s) | 79 - 85 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1999-00117-6 | |
| Published online | 01 September 2002 | |
Relaxation time of the Cooper pairs near 
in cuprate superconductors
Laboratorio de Bajas Temperaturas y Superconductividad Departamento de Física de la Materia Condensada Universidad de Santiago de Compostela Santiago de Compostela, E-15706 Spain
Received:
14
June
1999
Accepted:
2
August
1999
It is first shown that
the thermal fluctuation effects on the transport and on the thermodynamic
observables above the superconducting transition may provide, when they are
analyzed simultaneously and consistently, a powerful tool to access the relaxation
time, 
, of the Cooper pairs with wave vector 
in high-temperature
cuprate superconductors (HTSC). Then, we apply this procedure to optimally
doped
YBa2Cu3O
(Y-123) crystals. It is found that in this HTSC follows, within
20% accuracy, the BCS temperature behaviour and amplitude given by
.
PACS: 74.40.+k – Fluctuations (noise, chaos, nonequilibrium superconductivity, localization, etc.) / 74.72.Bk – Y-Based cuprates / 74.20.-z – Theories and models of superconducting state
© EDP Sciences, 1999
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