Modification of the oxygen-isotope effect in high-temperature superconductors due to transition-metal doping

Bornemann, H. J. ; Morris, D. E. ; Sinha, A. P. B. ; Chandrachood, M. R. ; Liu, H. B. (1993) Modification of the oxygen-isotope effect in high-temperature superconductors due to transition-metal doping Physical Review B: Condensed Matter and Materials Physics, 48 (13). pp. 9803-9809. ISSN 1098-0121

Full text not available from this repository.

Official URL: http://prb.aps.org/abstract/PRB/v48/i13/p9803_1

Related URL: http://dx.doi.org/10.1103/PhysRevB.48.9803

Abstract

We have investigated the effect on the oxygen-isotope-effect parameter α 0 of transition-metal substitutions at the Cu sites in YBa2Cu3O7-δ (Y 1:2:3), YBa2Cu4O8 (Y 1:2:4), and Bi2Sr2CaCu2O8 compounds. The effects of the dopants are found to be quite diverse. In the case of Zn doping, α 0 remains small in both Y 1:2:3 and Y 1:2:4 although Tc is rapidly depressed. On the other hand, doping with Fe or Ni has quite different effects in Y 1:2:3 and in Y 1:2:4. Our results suggest that the modification of the isotope effect depends upon the location of the dopant (Cu-O chains versus planes).

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:48949
Deposited On:19 Jul 2011 07:27
Last Modified:19 Jul 2011 07:27

Repository Staff Only: item control page