SOFT-MODE SUPERCONDUCTIVITY IN SRTIO3-X

被引：76

作者：

APPEL, J

机构：

[1] Gulf General Atomic Incorporated, San Diego

来源：

PHYSICAL REVIEW | 1969年 / 180卷 / 02期

关键词：

D O I：

10.1103/PhysRev.180.508

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The transition temperature Tc of SrTiO3-x is calculated as a function of the electron concentration. The effective electron-electron interaction has an attractive part caused by the intravalley exchange of soft optical phonons that have been observed in the tetragonal phase with Raman scattering and neutron diffraction. The Coulomb part is determined by the longitudinal dielectric constant for a degenerate polar semiconductor. The deformation potential for the interaction between electrons and soft phonons of symmetry A1g is used as an adjustable parameter to fit Tc at one experimental point. © 1969 The American Physical Society.

引用

页码：508 / &

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