Ferromagnetism in the one-dimensional Kondo lattice model

G. Honner; M. Gulacsi

doi:10.1016/S0304-8853(98)00025-0

Ferromagnetism in the one-dimensional Kondo lattice model

G. Honner
, M. Gulacsi^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

We investigate the incompletely saturated ferromagnetic phase which occurs at strong coupling in the partially filled one-dimensional (1D) Kondo lattice model. The double-exchange interaction responsible for the ferromagnetic ordering is absent in dilute Kondo systems, and is a missing element in nearly all theoretical treatments of the model. We discuss how double-exchange arises in the system, even though the Kondo coupling is antiferromagnetic, and show that at strong coupling it favors an alignment of the spins of unpaired localized moments. A ground-state phase diagram for the localized moments is given, with double-exchange interactions included, and is in complete qualitative agreement with numerical simulations.

Original language	English
Pages (from-to)	307-312
Number of pages	6
Journal	Journal of Magnetism and Magnetic Materials
Volume	184
Issue number	3
DOIs	https://doi.org/10.1016/S0304-8853(98)00025-0
Publication status	Published - 5 May 1998

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title = "Ferromagnetism in the one-dimensional Kondo lattice model",

abstract = "We investigate the incompletely saturated ferromagnetic phase which occurs at strong coupling in the partially filled one-dimensional (1D) Kondo lattice model. The double-exchange interaction responsible for the ferromagnetic ordering is absent in dilute Kondo systems, and is a missing element in nearly all theoretical treatments of the model. We discuss how double-exchange arises in the system, even though the Kondo coupling is antiferromagnetic, and show that at strong coupling it favors an alignment of the spins of unpaired localized moments. A ground-state phase diagram for the localized moments is given, with double-exchange interactions included, and is in complete qualitative agreement with numerical simulations.",

keywords = "Correlated electron system, Critical phenomena - Onset of ferromagnetism, Kondo lattice, One-dimensional systems",

author = "G. Honner and M. Gulacsi",

year = "1998",

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doi = "10.1016/S0304-8853(98)00025-0",

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T1 - Ferromagnetism in the one-dimensional Kondo lattice model

AU - Honner, G.

AU - Gulacsi, M.

PY - 1998/5/5

Y1 - 1998/5/5

N2 - We investigate the incompletely saturated ferromagnetic phase which occurs at strong coupling in the partially filled one-dimensional (1D) Kondo lattice model. The double-exchange interaction responsible for the ferromagnetic ordering is absent in dilute Kondo systems, and is a missing element in nearly all theoretical treatments of the model. We discuss how double-exchange arises in the system, even though the Kondo coupling is antiferromagnetic, and show that at strong coupling it favors an alignment of the spins of unpaired localized moments. A ground-state phase diagram for the localized moments is given, with double-exchange interactions included, and is in complete qualitative agreement with numerical simulations.

AB - We investigate the incompletely saturated ferromagnetic phase which occurs at strong coupling in the partially filled one-dimensional (1D) Kondo lattice model. The double-exchange interaction responsible for the ferromagnetic ordering is absent in dilute Kondo systems, and is a missing element in nearly all theoretical treatments of the model. We discuss how double-exchange arises in the system, even though the Kondo coupling is antiferromagnetic, and show that at strong coupling it favors an alignment of the spins of unpaired localized moments. A ground-state phase diagram for the localized moments is given, with double-exchange interactions included, and is in complete qualitative agreement with numerical simulations.

KW - Correlated electron system

KW - Critical phenomena - Onset of ferromagnetism

KW - Kondo lattice

KW - One-dimensional systems

UR - https://www.scopus.com/pages/publications/0032070374

U2 - 10.1016/S0304-8853(98)00025-0

DO - 10.1016/S0304-8853(98)00025-0

M3 - Article

SN - 0304-8853

VL - 184

SP - 307

EP - 312

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 3

ER -

Ferromagnetism in the one-dimensional Kondo lattice model

Abstract

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