Missing valence states, diamagnetic insulators, and superconductors

5 December 1988

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 61 (23) , 2713-2716
https://doi.org/10.1103/physrevlett.61.2713

Abstract

About fifteen elements in the periodic table skip certain valences in all the compounds they form. This is understood to arise from a negative effective intra-atomic interaction. A model with such interactions as well as interatomic repulsions gives insulating behavior near half-filling and superconductivity farther from it, in agreement with the properties of

{BaPb}_{x}

{Bi}_{1 - x}

O_{3}

and

{Ba}_{x}

K_{1 - x}

{BiO}_{3}

Keywords

This publication has 13 references indexed in Scilit:

Superconductivity near 30 K without copper: the Ba0.6K0.4BiO3 perovskite
Nature, 1988
Bismuth valence order-disorder study in BaBiO3 by powder neutron diffraction
Solid State Communications, 1988
Superconductivity above 20 K in the Ba-K-Bi-O system
Physical Review B, 1988
Charge transfer excitations and superconductivity in “ionic” metals
Solid State Communications, 1987
Thermodynamic properties of the extended Hubbard model with strong intra-atomic attraction and an arbitrary electron density
Physical Review B, 1981
Superconductivity in the BaPb1−x Bi x O3 system
Applied Physics A, 1980
Mixed-valent Ba₂Bi³⁺Bi⁵⁺O₆: structure and properties vs temperature
Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1979
High-temperature superconductivity in the BaPb1-xBixO3 systems
Solid State Communications, 1975
Model for the Electronic Structure of Amorphous Semiconductors
Physical Review Letters, 1975
Thermodynamic Properties of the One-Dimensional Half-Filled-Band Hubbard Model. II
Progress of Theoretical Physics, 1972