Original scientific paper

The Role of Oxygen Content in Electronic Structures of LaBa₂Cu₃O_y

Li Ming ; Department of Chemistry, Southwest China Normal University, Chongqing 6307 15, People's Republic of China
Deng Chuanyue ; Department of Chemistry, Southwest China Normal University, Chongqing 6307 15, People's Republic of China

Abstract

The electronic structures of the LaBa2CU30ysuperconductor were
calculated using the band-structure treatment based on the EHMO
approach and the role of the oxygen content was investigated. The
results show that the oxygen content has a great influence on the
band structures and the densities of states near the Fermi level Er-
The lower or higher oxygen content results in the suppression of
the transition temperature Te, which is in qualitative agreement
with the behaviour of Te given by experiment. In addition, the
study on the electronic charge of copper shows that the oxidation
state of Cu is not the predominant factor for the supercondictivity
of LaBa2CU30yand may just be a result of charge balance.

Keywords

Hrčak ID:

177141

URI

https://hrcak.srce.hr/177141

Publication date:

1.11.1996.

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