Thermal expansion of La1.85Sr0.15CuO4 in magnetic fields up to 14 tesla

Authors
Bruns, D Buchner, B Gross, R Lorenz, T Uchida, S
Citation
D. Bruns et al., Thermal expansion of La1.85Sr0.15CuO4 in magnetic fields up to 14 tesla, J L TEMP PH, 117(5-6), 1999, pp. 1453-1457
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF LOW TEMPERATURE PHYSICS
ISSN journal
00222291 → ACNP
Volume
117
Issue
5-6
Year of publication
1999
Pages
1453 - 1457
Database
ISI
SICI code
0022-2291(199912)117:5-6<1453:TEOLIM>2.0.ZU;2-T
Abstract
We present thermal expansion measurements on a La1.85Sr0.15CuO4 single crys tal in external magnetic fields. Clear anomalies of the thermal expansion a re observed at the superconducting transition. We have studied in detail th e anisotropic influence of external fields on the anomalies. As expected, t he field dependence is maximum for B \\ c and minimum for B perpendicular t o c. The measured angular dependence corresponds to that of an anisotropic 3d superconductor with an anisotropy parameter gamma similar or equal to 18 .