Affordable Access

Publisher Website

Anomalously enhanced oxygen isotope effect in La1.85Sr0.15CuO4doped with Fe

Authors
Journal
Applied Superconductivity
0964-1807
Publisher
Elsevier
Publication Date
Volume
1
Identifiers
DOI: 10.1016/0964-1807(93)90245-w
Disciplines
  • Physics

Abstract

Abstract The effect of oxygen isotope substitution on superconducting transition temperature T c has been studied in La 1.85Sr 0.15Cu 1−yFe yO 4 (0 < y < 0.01). The substitution for Cu by Fe suppresses T C and dramatically increases the oxygen isotope exponent α O , where T C ∝ M O −α o , M o is an oxygen isotope mass. The data are analyzed in terms of the Abrikosov-Gor'kov (AG) theory of superconductors with paramagnetic impurities. Both T C and α O show stronger dependence on the Fe concentration than predicted by this theory, while our experimental data on T C(y) and α O (y) for LSCO doped with Ni and Zn are in a good agreement with the AG theory.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

EPR study of Fe-doped La1.85Sr0.15CuO4

on Journal of the Less Common Met... Jan 01, 1990

Magnetic and resistive determination of the oxygen...

on Solid State Communications Jan 01, 1988

Structure of La1.85Sr0.15CuO4doped with Zn in high...

on Physica C Superconductivity Jan 01, 1996

Oxygen isotope effect in Nd1.85Ce0.15CuO4

on Physica C Superconductivity Jan 01, 1991
More articles like this..