Correlation effects on the electron-phonon interaction

被引：6

作者：

Min, B. I. ^{[1
]}

Lee, J. D. ^{[1
]}

Kang, Kicheon ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea

来源：

PHYSICA B-CONDENSED MATTER | 1995年 / 206卷

关键词：

D O I：

10.1016/0921-4526(94)00571-C

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The electron-phonon coupling constant (lambda(ph)) is evaluated for the Hubbard Hamiltonian system. It is found that the Coulomb correlation in the Hubbard model gives rise to a phonon hardening and an enhancement of lambda(ph). It is also found that lambda(ph), becomes larger than the electron-spin-fluctuation coupling constant) lambda(sf) for a correlated system with a nearly filled band.

引用

页码：736 / 738

页数：3

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