| |
| Author(s) |
Balamurugan, S.; Prakash, O.; Padalia, B. D.; Gopalakrishnan, I. K.; Yakhmi, J. V.; Selvam, P.
(NM&SCD;TPPED)
|
| Source |
Journal of Superconductivity and Novel Magnetism, 2003. Vol. 16 (3): pp. 581-584 |
| ABSTRACT
|
The Cu K-edge measurements on the optimum Tc1201 compounds (Hg1-xMx)Sr2CuO4+δ(M=Cr, Mo, or Re; 0.10≤x≤0.30) show besides Cu2+(predominant) a very weak but distinct signature of Cu1+ , only in the superconducting (SC) samples. The Cu1+ feature is conspicuously absent when these compositions are non-superconducting because of different processing conditions. Our finding of monovalent Cu in SC (Hg,M)/Sr-1201 favors the presence of Cu at the Hg-site and this seems to facilitate superconductivity in these cuprates. |
|
|
|