Single-particle excitations of the Kondo lattice

被引:20
|
作者
Eder, R
Stoica, O
Sawatzky, GA
机构
[1] Department of Applied and Solid State Physics, University of Groningen
关键词
D O I
10.1103/PhysRevB.55.R6109
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We present a simple theory for the description of the single-particle excitations of the Kondo lattice model. We derive an effective Hamiltonian that describes the coherent propagation of single-particle-like fluctuations on a strong-coupling ground state. Even for f electrons that are replaced by Kondo spins, the resulting spectral function obeys the Luttinger theorem including the f electrons, and our calculation reproduces the complicated evolution of the spectral function with electron density seen in numerical studies.
引用
收藏
页码:R6109 / R6112
页数:4
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