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
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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 |
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