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

[1]

Abrikosov A.A., 1963, METHODS QUANTUM FIEL

[2]

Baym G., 1991, LANDAU FERMI LIQUID

[3] HEAVY FERMIONS - AN INDUCED INTERACTION APPROACH [J].

BEDELL, KS .

JOURNAL OF THE LESS-COMMON METALS, 1987, 127 :299-309

[4] Application of Gutzwiller's variational method to the metal-insulator transition [J].

Brinkman, W. F. ;

Rice, T. M. .

PHYSICAL REVIEW B-SOLID STATE, 1970, 2 (10) :4302-4304

[5] OPTICAL-CONDUCTIVITY SPECTRA OF SR1-XLAXTIO3 - FILLING-DEPENDENT EFFECT OF THE ELECTRON CORRELATION [J].

FUJISHIMA, Y ;

TOKURA, Y ;

ARIMA, T ;

UCHIDA, S .

PHYSICAL REVIEW B, 1992, 46 (17) :11167-11170

[6] NUMERICAL-SOLUTION OF THE D=INFINITY HUBBARD-MODEL - EVIDENCE FOR A MOTT TRANSITION [J].

GEORGES, A ;

KRAUTH, W .

PHYSICAL REVIEW LETTERS, 1992, 69 (08) :1240-1243

[7] HUBBARD-MODEL IN INFINITE DIMENSIONS [J].

GEORGES, A ;

KOTLIAR, G .

PHYSICAL REVIEW B, 1992, 45 (12) :6479-6483

[8] HUBBARD-MODEL IN INFINITE DIMENSIONS - A QUANTUM MONTE-CARLO STUDY [J].

JARRELL, M .

PHYSICAL REVIEW LETTERS, 1992, 69 (01) :168-171

[9] ELECTRON-ELECTRON SCATTERING IN TRANSPORT COEFFICIENTS OF SIMPLE METALS [J].

LAWRENCE, WE ;

WILKINS, JW .

PHYSICAL REVIEW B, 1973, 7 (06) :2317-2332

[10] THEORY OF A SUPERFLUID FERMI LIQUID .I. GENERAL FORMALISM AND STATIC PROPERTIES [J].

LEGGETT, AJ .

PHYSICAL REVIEW, 1965, 140 (6A) :1869-&

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