Non-Collinear Magnetism in Itinerant-Electron Systems

• Authors: J. Kübler
• Languages of publication: EN

Abstracts

EN

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.

Keywords

EN

71.15.Mb; 75.10.Lp; 75.30.Ds; 75.30.Kz

Discipline

• 75.30.Ds: Spin waves(for spin-wave resonance, see 76.50.+g)
• 75.10.Lp: Band and itinerant models
• 71.15.Mb: Density functional theory, local density approximation, gradient and other corrections
• 75.30.Kz: Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)(for ferroelectric phase transitions, see 77.80.B-; for superconductivity phase diagrams, see 74.25.Dw)

• Journal: Acta Physica Polonica A
• Year: 2000
• Volume: 97
• Issue: 1
• Pages: 165-173

Dates

published

2000-01

Contributors

author

J. Kübler

• Darmstadt University of Technology, Institute of Solid State Physics, 64289 Darmstadt, Germany

Identifiers

DOI

10.12693/APhysPolA.97.165