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 language | English (US) |
|---|---|
| Pages (from-to) | 6955-6962 |
| Number of pages | 8 |
| Journal | Physical Review B |
| Volume | 40 |
| Issue number | 10 |
| DOIs | |
| State | Published - Jan 1 1989 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
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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 journal › Article
TY - JOUR
T1 - Effect of the local charge disproportionation on the electronic structure of BaPb1-xBixO3
AU - Sofo, Jorge Osvaldo
AU - Aligia, A. A.
AU - Nuez Regueiro, M. D.
PY - 1989/1/1
Y1 - 1989/1/1
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevB.40.6955
DO - 10.1103/PhysRevB.40.6955
M3 - Article
AN - SCOPUS:33744600840
VL - 40
SP - 6955
EP - 6962
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 2469-9950
IS - 10
ER -