ISOTOPE SHIFT IN T-C OF LSCO WITH 3D IMPURITIES

Authors
BABUSHKINA NA ZHERNOV AP INYUSHKIN AV OZHOGIN VI TALDENKOV AN MOLCHANOVA LV
Citation
Na. Babushkina et al., ISOTOPE SHIFT IN T-C OF LSCO WITH 3D IMPURITIES, Physica. C, Superconductivity, 235, 1994, pp. 845-846
Citations number
3
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
235
Year of publication
1994
Part
2
Pages
845 - 846
Database
ISI
SICI code
0921-4534(1994)235:<845:ISITOL>2.0.ZU;2-G
Abstract
The influence of oxygen isotope substitution on the critical temperatu re T-c in La(2-y)Sr(y)Cu(1-x)Me(x)O(4) (Me=Fe, Ni) optimally doped (y= 0.15) and overdoped (y=0.20) with Sr has been studied over wide range of 3d elements concentration. A substantionally different behavior of isotope exponent alpha(O) = - d(lnT(c))/d(lnM) has been found in optim ally doped and overdoped compounds. A qualitative explanation is sugge sted for this distinction which is grounded on the specific properties of the spin correlations in LSCO.