ANDREEV REFLECTIONS FROM LA2-XSRXCUO4 SINGLE-CRYSTALS

Authors
DEUTSCHER G ACHSAF N GOLDSCHMIDT D REVCOLEVSCHI A VIETKINE A
Citation
G. Deutscher et al., ANDREEV REFLECTIONS FROM LA2-XSRXCUO4 SINGLE-CRYSTALS, Physica. C, Superconductivity, 282, 1997, pp. 140-144
Citations number
8
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
282
Year of publication
1997
Part
1
Pages
140 - 144
Database
ISI
SICI code
0921-4534(1997)282:<140:ARFLS>2.0.ZU;2-L
Abstract
We have measured the conductance of Point Contacts between LSCO single crystals and Gold tips. The initial increase of the conductance as a function of applied bias rules out the presence of nodes in the gap. T he data is best fitted by an extended s-wave symmetry gap, with a rati o of about three between its extrema values.