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Non-collinear magnetism in itinerant-electron systems

Kübler, Jürgen (2000):
Non-collinear magnetism in itinerant-electron systems.
97, In: Acta Physica Polonica A, (1), pp. 165-173. ISSN 0587-4246, e-ISSN 1898-794X,
DOI: 10.12693/APhysPolA.97.165,
[Article]

Abstract

The Heisenberg model cannot uncritically be applied to itinerant-electron magnets, including those that show non-collinear order. Density functional theory is therefore generalized to apply to non-collinear itinerant-electron magnets. The appropriate Kohn-Sham equations are discussed and the total energy of spiral magnetic order is used to determine the magnon spectrum in the adiabatic approximation. The energy spectrum of transverse spin fluctuations can also be estimated with the total energy of spiral magnetic order and allows a determination of thermal properties of itinerant-electron magnets. Calculated results for Fe, Co, Ni, and FeCo are discussed and compared with experimental results.

Item Type: Article
Erschienen: 2000
Creators: Kübler, Jürgen
Title: Non-collinear magnetism in itinerant-electron systems
Language: English
Abstract:

The Heisenberg model cannot uncritically be applied to itinerant-electron magnets, including those that show non-collinear order. Density functional theory is therefore generalized to apply to non-collinear itinerant-electron magnets. The appropriate Kohn-Sham equations are discussed and the total energy of spiral magnetic order is used to determine the magnon spectrum in the adiabatic approximation. The energy spectrum of transverse spin fluctuations can also be estimated with the total energy of spiral magnetic order and allows a determination of thermal properties of itinerant-electron magnets. Calculated results for Fe, Co, Ni, and FeCo are discussed and compared with experimental results.

Journal or Publication Title: Acta Physica Polonica A
Volume: 97
Number: 1
Divisions: 05 Department of Physics
05 Department of Physics > Institute for condensed matter physics (2021 merged in Institute for Condensed Matter Physics)
Date Deposited: 19 Nov 2008 16:24
DOI: 10.12693/APhysPolA.97.165
Additional Information:

Proceedings of the European Conference PHYSICS OF MAGNETISM '99, Poznań, Poland, June 21-25, 1999, Part I

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