Rao, CNR and Bhat, V and Nagarajan, R and Rao, Ranga G and Sankar, G (1989) Nature of copper in the new cuprate superconductors Pb2Sr2Ca1-xLxCu3O8+δ. In: Physical Review B: Condensed Matter, 39 (13). pp. 9621-9623.
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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:||Journal Article|
|Additional Information:||Copyright of this article belongs to The American Physical Society.|
|Keywords:||X-ray absorption spectra,Photoemission and photoelectron spectra.|
|Department/Centre:||Division of Chemical Sciences > Solid State & Structural Chemistry Unit|
|Date Deposited:||19 Aug 2010 12:43|
|Last Modified:||19 Sep 2010 06:14|
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