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Photoemission studies of the high $T_c$ superconductor, $(YBa_2Cu_3O_7)$

Sarma, DD and Sreedhar, K and Ganguly, P and Rao, CNR (1987) Photoemission studies of the high $T_c$ superconductor, $(YBa_2Cu_3O_7)$. In: Phase Transitions, 10 (1-2). pp. 39-47.

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Considerable changes are observed in the spectra of the valence band and O(ls) regions in $YBa_2Cu_3O_7$, when the temperature is lowered from 300K to 80K. The results are interpreted in terms of a progressive formation of $O^{2-}_2$-like species with decreasing temperature. This is accompanied by the transformation of Cu to Cu. It is suggested that the holes generated at the top of the valence band forming the $O^{2-}_2$-like species may play a crucial role in the superconductivity of the oxide.

Item Type: Journal Article
Additional Information: Copyright belongs to Taylor & Francis.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Depositing User: Mr. Ramesh Chander
Date Deposited: 08 Mar 2008
Last Modified: 27 Aug 2008 13:13
URI: http://eprints.iisc.ac.in/id/eprint/13208

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