Paramagnetic-ferromagnetic transition in a double-exchange model

Eugene Kogan; Mark Auslender

doi:10.1016/j.physb.2006.01.009

Paramagnetic-ferromagnetic transition in a double-exchange model

Eugene Kogan, Mark Auslender

Department of Electrical & Computer Engineering

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

1 Scopus citations

Abstract

We study paramagnetic-ferromagnetic transition due to exchange interaction between classical localized spins on a lattice and conduction electrons. By solving the equations of dynamical mean field theory, we find explicit formula for Curie temperature at arbitrary Hund coupling, electron band structure and concentration. The results of numerical simulations of the Curie temperature for the semi-circular electron density of states model are presented.

Original language	English
Pages (from-to)	286-287
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	378-380
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physb.2006.01.009
State	Published - 1 May 2006

Keywords

Double-exchange model
Dynamical mean field theory
Ferromagnetic order
Magnetism
Strong correlations

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10.1016/j.physb.2006.01.009

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abstract = "We study paramagnetic-ferromagnetic transition due to exchange interaction between classical localized spins on a lattice and conduction electrons. By solving the equations of dynamical mean field theory, we find explicit formula for Curie temperature at arbitrary Hund coupling, electron band structure and concentration. The results of numerical simulations of the Curie temperature for the semi-circular electron density of states model are presented.",

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AB - We study paramagnetic-ferromagnetic transition due to exchange interaction between classical localized spins on a lattice and conduction electrons. By solving the equations of dynamical mean field theory, we find explicit formula for Curie temperature at arbitrary Hund coupling, electron band structure and concentration. The results of numerical simulations of the Curie temperature for the semi-circular electron density of states model are presented.

KW - Double-exchange model

KW - Dynamical mean field theory

KW - Ferromagnetic order

KW - Magnetism

KW - Strong correlations

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JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

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IS - SPEC. ISS.

ER -

Paramagnetic-ferromagnetic transition in a double-exchange model

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