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Nature of copper in the new cuprate superconductors Pb2Sr2Ca1-xLxCu3O8+δ

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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Official URL: http://prb.aps.org/abstract/PRB/v39/i13/p9621_1


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
Publication: Physical Review B: Condensed Matter
Publisher: The American Physical Society
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
URI: http://eprints.iisc.ac.in/id/eprint/31452

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