Rao, C. N. R. ; Bhat, V. ; Nagarajan, R. ; Ranga Rao, G. ; Sankar, G. (1989) Nature of copper in the new cuprate superconductors Pb2Sr2Ca1-xLxCu3O8+δ Physical Review B: Condensed Matter and Materials Physics, 39 (13). pp. 9621-9623. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v39/i13/p9621_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.39.9621
Abstract
Based on Cu K-edge absorption spectroscopy as well as Cu(2p3/2) and Cu(LVV) Auger spectroscopies it is shown that the recently discovered Pb2Sr2Ca1−xLxCu3O8+δ (L=Y or Lu) superconductors contain well-defined Cu1+ species in admixture with Cu2+. The proportion of Cu1+ is small in the nonsuperconducting samples with x=1, a feature which is uniquely different from that in YBa2Cu3O7−δ.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 39950 |
| Deposited On: | 20 May 2011 08:17 |
| Last Modified: | 26 May 2011 04:50 |
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