In:
Modern Physics Letters B, World Scientific Pub Co Pte Ltd, Vol. 03, No. 04 ( 1989-03-20), p. 325-329
Abstract:
Thermal expansion coefficients of YBa 2 Cu 3 O 7−x with the tetragonal and orthorhombic structural phases were measured by the method of differential parallel-plate capacitance. There exist anomalies near 205 K for orthorhombic phase and between 92–130K for tetragonal phase, respectively. We suggest that the former may be related to the lattice instability, indicating that there is a strong electron-phonon interaction; the latter may be result from the structural phase transition which damages the high T c superconductivity. In the meantime, a small jump of the thermal expansion coefficient at T c was observed in the orthorhombic phase and from this the pressure effect was estimated.
Type of Medium:
Online Resource
ISSN:
0217-9849
,
1793-6640
DOI:
10.1142/S0217984989000522
Language:
English
Publisher:
World Scientific Pub Co Pte Ltd
Publication Date:
1989
