OXYGEN-ISOTOPE EFFECT IN TC OF LA2-YSRYCU1-XMEXO4 (ME=NI, ZN, CO, FE)

Authors
BABUSHKINA N",OZHOGIN,"INYUSHKIN A TALDENKOV A MOLCHANOVA L
Citation
A. Babushkina N",ozhogin,"inyushkin et al., OXYGEN-ISOTOPE EFFECT IN TC OF LA2-YSRYCU1-XMEXO4 (ME=NI, ZN, CO, FE), Physica. B, Condensed matter, 194, 1994, pp. 1433-1434
Citations number
11
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
194
Year of publication
1994
Part
2
Pages
1433 - 1434
Database
ISI
SICI code
0921-4526(1994)194:<1433:OEITOL>2.0.ZU;2-S
Abstract
The effect of oxygen isotope substitution on superconducting transitio n temperature T(c) has been measured in La1.85Sr0.15Cu1-yMeyO4(Me=Ni, Zn Co, Fe). In all compounds the T(c) decreases and the isotope expone nt alpha(o) = -d(lnT(c))/d(lnM) increases with increasing Me content. The results for LSCO:Ni and LSCO:Zn are in good agreement with the Abr ikosov-Gor'kov (AG) theory of magnetic pair-breaking. The dependecies of alpha(o)(x) and T(c) (x) for LSCO:Fe and LSCO:Co are much stronger than those predicted by the theory.