Thermodynamic study of the melting transition in the vortex phase diagram of high purity YBa2Cu3O7-delta single crystals

Authors
Deligiannis, K Charalambous, M Chaussy, J Liang, R Bonn, D Hardy, WN
Citation
K. Deligiannis et al., Thermodynamic study of the melting transition in the vortex phase diagram of high purity YBa2Cu3O7-delta single crystals, PHYSICA C, 341, 2000, pp. 1329-1330
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA C
ISSN journal
09214534 → ACNP
Volume
341
Year of publication
2000
Part
2
Pages
1329 - 1330
Database
ISI
SICI code
0921-4534(200011)341:<1329:TSOTMT>2.0.ZU;2-5
Abstract
We present a thermodynamic study of high purity YBa2Cu3O7-delta single crys tals, using a state of the art AC calorimetric set-up. Our sample exhibits a sharp vortex melting transition for a wide range of fields. This first or der transition is confined in the H-T vortex phasediagram between two criti cal points. Close to these critical points we observe a new specific heat a nomaly.