Symmetry Induced Half-Metallic Alkaline Earth Ferromagnets

• Authors: L. Adamowicz , M. Wierzbicki
• Languages of publication: EN

Abstracts

EN

Search for new half-metallic ferromagnetic binary compounds composed of alkaline earth and III (boron) or IV (carbon) elements is reported. Ab initio all-electron density functional theory calculations in the generalised gradient approximation indicate possibility of half-metallic ferromagnetism. This is a new class of theoretically predicted hypothetical materials, without transition metal elements, not as yet discovered experimentally. Ferromagnetism is expected to be induced by suitable crystalline structure with lattice constant above some critical value. The predominant p electrons mechanism seems to be responsible for the formation and interactions of localised magnetic moments on boron or carbon atoms.

Keywords

EN

71.15.Mb; 71.20.Dg; 72.25.Ba; 75.10.Lp

Discipline

• 72.25.Ba: Spin polarized transport in metals
• 75.10.Lp: Band and itinerant models
• 71.15.Mb: Density functional theory, local density approximation, gradient and other corrections
• 71.20.Dg: Alkali and alkaline earth metals

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 115
• Issue: 1
• Pages: 217-219

Dates

published

2009-01

Contributors

author

L. Adamowicz

• Faculty of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warszawa, Poland

author

M. Wierzbicki

• Faculty of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warszawa, Poland

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Identifiers

DOI

10.12693/APhysPolA.115.217