Heavy Quasiparticles in the Anderson Lattice Model

Preprint

13 November 1995

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9511055

Abstract

An exact-diagonalization technique on small clusters is used to study the dynamics of the one-dimensional symmetric Anderson lattice model. Our calculated excitation spectra reproduce key features expected for an infinite Kondo lattice such as nearly localized low-energy spin excitations and extended regions of `heavy-quasiparticle' bands. We show that, in contrast to the hybridization picture, low-energy spin excitations of the nearly-localized $f$-electron system play a key role in the formation of an almost dispersionless low-energy band of heavy quasiparticles.

Keywords

ANDERSON LATTICE MODEL
HEAVY QUASIPARTICLES
HYBRIDIZATION
LATTICE MODEL
QUASIPARTICLE
ENERGY SPIN
LOW ENERGY

All Related Versions

Version 1, 1995-11-13, ArXiv
Published version: Physical Review Letters, 76 (2), 279.

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