Murugesan, M. ; Rao, M. S. Ramachandra ; Gupta, L. C. ; Pinto, R. ; Sharon, M. ; Vijayaraghavan, R. (1996) Strong rare-earth size dependence of Tc in RSr2Cu2.85Re0.15Oz Physical Review B, 53 (13). pp. 8604-8607. ISSN 0163-1829
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Official URL: http://prb.aps.org/abstract/PRB/v53/i13/p8604_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.53.8604
Abstract
We report a strong rare-earth size dependence of Tc in RSr2Cu2.85Re0.15Oz (R=rare earth, zā7.2) compounds, unlike in RBa2Cu3Oy compounds. A strong correlation is observed between the superconducting transition temperature and the orthorhombicity of the structure, which itself is R-size dependent. Orthorhombicity is highest for HoSr2Cu2.85Re0.15Oz and ErSr2Cu2.85Re0.15Oz compounds, which also have yielded the highest Tc (ā42 K). Significantly, TbSr2Cu2.85Re0.15Oz stabilizes in a 1-2-3 structure and also superconducts (Tcā22 K), whereas EuSr2Cu2.85Re0.15Oz does not superconduct, although it forms a single phase.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 11337 |
| Deposited On: | 09 Nov 2010 03:32 |
| Last Modified: | 02 Jun 2011 05:56 |
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