Vijayakrishnan, V and Kulkarni, GU and Rao, CNR (1990) Valence state of bismuth and thallium in superconducting cuprates: a $Bi-L_3$ and $TI-L_3$ X-ray absorption spectroscopic study. In: Modern Physics Letters B, 4 (7). pp. 451-461.
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Based on a $Bi–L_3$ edge X-ray absorption spectroscopic study of superconducting bismuth cuprates and model $Bi$ compounds, it is shown that $Bi$ is essentially in the 3 + state in the cuprates. $TI–L_3$ absorption edge studies a number of thallium cuprate superconductors along with those of model compounds show some evidence for the occupancy of the $TI-6s$ band, but $Tl^3+$ is the prepondarant species. $Cu$ K-edge studies of the thallium cuprates show that $Cu$ is essentially in the 2+ state.
Item Type: | Journal Article |
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Publication: | Modern Physics Letters B |
Publisher: | World Scientific Publishing Company |
Additional Information: | Copyright of this article belongs to World Scientific Publishing Company. |
Department/Centre: | Division of Chemical Sciences > Solid State & Structural Chemistry Unit |
Date Deposited: | 24 Sep 2007 |
Last Modified: | 03 Feb 2012 07:17 |
URI: | http://eprints.iisc.ac.in/id/eprint/11899 |
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