Role of apex oxygen and redox elements in high temperature superconductors

Amritkar, R. E. ; Kanhere, D. G. ; Panat, P. V ; Sinha, A. P. B. (1991) Role of apex oxygen and redox elements in high temperature superconductors Bulletin of Materials Science, 14 (4). pp. 1079-1081. ISSN 0250-4707

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Official URL: http://www.ias.ac.in/j_archive/bms/14/4/1079-1082/...

Related URL: http://dx.doi.org/10.1007/BF02747483

Abstract

The presence of valence fluctuating redox ions such as Pb, Tl, Sb, etc can enhance the transition temperature of the new oxide superconductors. We propose the possibility of the existence of negative Hubbard parameter (U) on redox ion which results in effective negative U on apex oxygen bridging redox ion and the CuO2 planes. This enhances Tc.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Redox Ions; Apex Oxygen
ID Code:504
Deposited On:21 Sep 2010 16:08
Last Modified:03 Jun 2011 13:49

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