VANHOVE EXCITONS AND HIGH-TC SUPERCONDUCTIVITY .5. ELECTRON-PHONON INTERACTION

被引：29

作者：

MARKIEWICZ, RS

机构：

[1] Physics Department, Barnett Institute, Northeastern University, Boston

来源：

PHYSICA C | 1990年 / 169卷 / 1-2期

关键词：

Ceramic Materials - Lanthanum Compounds - Phonons;

D O I：

10.1016/0921-4534(90)90290-U

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A model is developed for electron-phonon interaction in the new superconducting oxides, showing that the system is nearly unstable with respect to a charge density wave, but that weak interlayer coupling generally prevents the establishment of true long-range order. It is shown that the associated mode softening produces a significant Tc enhancement, but probably not large enough to fully account for the experimental results. Suggestions are made for an additional coupling mechanism, probably associated with fluctuations into the ordered phase. © 1990.

引用

页码：63 / 75

页数：13