Effect of the local charge disproportionation on the electronic structure of BaPb1-xBixO3

Jorge Osvaldo Sofo, A. A. Aligia, M. D. Nuez Regueiro

Research output: Contribution to journalArticle

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Abstract

We calculate the electronic structure of BaPb1-xBixO3 within a simplified version of a model proposed before for the superconductivity, taking into account the local disproportionation of the Bi atoms in the coherent potential approximation. Three different regimes are obtained as a function of the Bi concentration x: normal metal, metallic with a pseudogap, and insulating phase. This allows a satisfactory explanation of the optical properties, resistivity, Hall, and Seebeck effects. The agreement is improved when the many-body effects due to the covalency of the Bi-O bonding, invoked for the pairing mechanism, are also considered.

Original languageEnglish (US)
Pages (from-to)6955-6962
Number of pages8
JournalPhysical Review B
Volume40
Issue number10
DOIs
StatePublished - Jan 1 1989

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electronic structure
Seebeck effect
Hall effect
superconductivity
optical properties
electrical resistivity
approximation
metals
atoms

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Sofo, Jorge Osvaldo ; Aligia, A. A. ; Nuez Regueiro, M. D. / Effect of the local charge disproportionation on the electronic structure of BaPb1-xBixO3. In: Physical Review B. 1989 ; Vol. 40, No. 10. pp. 6955-6962.
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Effect of the local charge disproportionation on the electronic structure of BaPb1-xBixO3. / Sofo, Jorge Osvaldo; Aligia, A. A.; Nuez Regueiro, M. D.

In: Physical Review B, Vol. 40, No. 10, 01.01.1989, p. 6955-6962.

Research output: Contribution to journalArticle

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