CALCULATIONS OF THE ELECTRONIC-STRUCTURE AND SUPERCONDUCTING PROPERTIES OF BAPB1-XSBXO3

被引：11

作者：

JULIEN, JP ^{[1
]}

PAPACONSTANTOPOULOS, DA ^{[1
]}

CYROTLACKMANN, F ^{[1
]}

PASTUREL, A ^{[1
]}

机构：

[1] USN,RES LAB,COMPLEX SYST THEORY BRANCH,WASHINGTON,DC 20375

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.43.2903

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have performed a band-structure calculation of the cubic perovskite compound BaSbO3 by the augmented-plane-wave method. Using these results we have constructed an accurate tight-binding Hamiltonian which we used to calculate the density of states of the alloy BaPb0.75Sb0.25O3 by the coherent-potential approximation. We have also calculated the electron-phonon coupling and found that such coupling can explain the low transition temperature T(c) of this alloy system and the higher T(c) for the Bi-doped alloy. A prediction is made for a much higher transition temperature for Sb- or Bi-rich alloys.

引用

页码：2903 / 2909

页数：7

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