Competing Interactions of Spin and Lattice in the Kondo Lattice Model
Date
2004
Authors
Gulacsi, Miklos
Bussmann-Holder, A.
Bishop, A.R.
Journal Title
Journal ISSN
Volume Title
Publisher
Springer
Abstract
The magnetic properties of a system of coexisting localized spins and conduction electrons are investigated within an extended version of the one-dimensional Kondo lattice model in which effects stemming from the electron-lattice and on-site Coulomb interactions are explicitly included. After bosonizing the conduction electrons, is it observed that intrinsic inhomogeneities with the statistical scaling properties of a Griffiths phase appear, and determine the spin structure of the localized impurities. The appearance of the inhomogeneities is enhanced by appropriate phonons and acts destructively on the spin ordering. The inhomogeneities appear on well-defined length scales and can be compared to the formation of intrinsic mesoscopic metastable patterns which are found in two-fluid systems.
Description
Keywords
Keywords: Bosonization; Competing interactions; Coulomb interactions; Kondo lattice models; Antiferromagnetic materials; Approximation theory; Backscattering; Colossal magnetoresistance; Computer simulation; Coulomb blockade; Crystal lattices; Degrees of freedom (m Competing interactions; Kondo; Lattice; Polarons
Citation
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Source
Journal of Superconductivity and Novel Magnetism
Type
Journal article