ROBUSTNESS OF A LOCAL FERMI-LIQUID AGAINST FERROMAGNETISM AND PHASE-SEPARATION

被引：23

作者：

ENGELBRECHT, JR ^{[1
]}

BEDELL, KS ^{[1
]}

机构：

[1] LOS ALAMOS NATL LAB, DIV THEORET, LOS ALAMOS, NM 87545 USA

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.74.4265

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the properties of Fermi liquids with the microscopic constraint of a local self-energy. In this case the forward scattering sum rule imposes strong limitations on the Fermi-liquid parameters, which rule out any Pomeranchek instabilitiesboth ferromagnetism and phase separation are suppressed. Superconductivity is possible in an s-wave channel only. We also study the approach to the metal-insulator transition, and find a Wilson ratio approaching 2. This ratio and other properties of Sr1-xLaxTiO3 are all consistent with the local Fermi-liquid scenario. © 1995 The American Physical Society.

引用

页码：4265 / 4268

页数：4

共 21 条

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