MAGNETIC-PROPERTIES OF HEAVY-FERMION SEMICONDUCTORS

被引：0

作者：

RISEBOROUGH, PS ^{[1
]}

机构：

[1] POLYTECH INST NEW YORK, DEPT PHYS, BROOKLYN, NY 11201 USA

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 1993年 / 7卷 / 1-3期

关键词：

D O I：

10.1142/S0217979293000159

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The heavy fermion semi-conductors, such as Ce3BiAPt3 or CeNiSn, are modeled by the Anderson Lattice Hamiltonian. In the limit of large coulomb interaction, the strong electron-electron correlations can be re-expressed in terms of slave bosons. The resulting model is treated in the mean field approximation. In this approximation, the model exhibits a transition between a low temperature semi-conducting state and a high temperature state. The high temperature state may be characterized as having an uncorrelated metallic conduction band and a set of independent local moments, whereas the low temperature state can be described as a highly correlated indirect pp semi-conductor. The dynamic magnetic response function is calculated, for the low temperature phase.

引用

页码：58 / 61

页数：4

共 7 条

[1]

AEPPLI G, 1992, PHYSICAL PHENOMENA H

[2] MIXED-VALENCE AS AN ALMOST BROKEN SYMMETRY [J].

COLEMAN, P .

PHYSICAL REVIEW B, 1987, 35 (10) :5072-5116

[3] HYBRIDIZATION GAP IN CE3BI4PT3 [J].

HUNDLEY, MF ;

CANFIELD, PC ;

THOMPSON, JD ;

FISK, Z ;

LAWRENCE, JM .

PHYSICAL REVIEW B, 1990, 42 (10) :6842-6845

[4] LARGE-ORBITAL-DEGENERACY EXPANSION FOR THE LATTICE ANDERSON MODEL [J].

MILLIS, AJ ;

LEE, PA .

PHYSICAL REVIEW B, 1987, 35 (07) :3394-3414

[5] THEORY OF THE DYNAMIC MAGNETIC RESPONSE OF CE3BI4PT3 - A HEAVY-FERMION SEMICONDUCTOR [J].

RISEBOROUGH, PS .

PHYSICAL REVIEW B, 1992, 45 (24) :13984-13995

[6] GAP IN THE MAGNETIC EXCITATION SPECTRUM OF CE3BI4PT3 [J].

SEVERING, A ;

THOMPSON, JD ;

CANFIELD, PC ;

FISK, Z ;

RISEBOROUGH, P .

PHYSICAL REVIEW B, 1991, 44 (13) :6832-6837

[7] FORMATION OF AN ANISOTROPIC ENERGY-GAP IN THE VALENCE-FLUCTUATING SYSTEM CENISN [J].

TAKABATAKE, T ;

TESHIMA, F ;

FUJII, H ;

NISHIGORI, S ;

SUZUKI, T ;

FUJITA, T ;

YAMAGUCHI, Y ;

SAKURAI, J ;

JACCARD, D .

PHYSICAL REVIEW B, 1990, 41 (13) :9607-9610

← 1 →