منابع مشابه
Half-metallic alloys: electronic structure, magnetism and spin polarization.
Using the state-of-the-art screened Korringa-Kohn-Rostoker Green function method we study the electronic and magnetic properties of NiMnSb and similar Heusler alloys. We show that all these compounds are half-metals, e.g. the minority-spin band is semiconducting and the Fermi level falls within this gap resulting in 100% spin polarization at the Fermi level. The total spin moment M(t) shows the...
متن کاملItinerant Magnetism in Metallic CuFe2Ge2
Theoretical calculations are performed to understand the electronic structure and magnetic properties of CuFe2Ge2. The band structure reveals large electron density N(EF) at the Fermi level suggesting a strong itinerant character of magnetism. The Fermi surface is dominated by two dimensional sheet like structures, with potentially strong nesting between them. The magnetic ground state appears ...
متن کاملHalf metallic ferromagnets.
Since its introduction by de Groot and colleagues in the early 1980s [1], the concept of half metallic ferromagnetism has attracted great interest. Idealized, half-metals have only one spin channel for conduction: the spin-polarized band structure exhibits metallic behavior for one spin channel, while the other spin band structure exhibits a gap at the Fermi level. Due to the gap for one spin d...
متن کاملMagnetism of frustrated metallic compound BaVS3
The microscopic magnetism of BaVS3, which undergoes a metal-insulator transition at TMI = 70K, has been investigated by using V nuclear resonance and neutron scattering. At 1.4K, we observed zero-field resonance signals in a low-frequency range, which were interpreted as being NQR, i.e., the absence of a static hyperfine field. On the other hand, we found magnetic Bragg peaks below 30K, indicat...
متن کاملHalf-metallic Zinc-Blende Compounds
We report first-principles calculations of zinc-blende half-metals, identifying systems for epitaxial growth with semiconductors, and present calculations for CrAs/GaAs multilayers. We find that half-metallicity is conserved troughout the heterostructure, making this a good candidate for spintronics applications.
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ژورنال
عنوان ژورنال: Physica B: Condensed Matter
سال: 1991
ISSN: 0921-4526
DOI: 10.1016/0921-4526(91)90415-b