Multilayers of Zinc-Blende Half-Metals with Semiconductors

Abstract

We report on first-principles calculations of multilayers of zinc-blende half-metallic ferromagnets CrAs and CrSb with III-V and II-VI semiconductors, in the [001] orientation. We examine the ideal and tetragonalised structures, as well as the case of an intermixed interface. We find that, as a rule, half-metallicity can be conserved throughout the heterostructures, provided that the character of the local coordination and bonding is not disturbed. At the interfaces with semiconductors, we describe a mechanism that can give also a non-integer spin moment per interface transition atom, and derive a simple rule to evaluate it.

References in corpus (12)

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Cited by in corpus (12)

• Introduction to half-metallic Heusler alloys: Electronic Structure and Magnetic Properties
• Orbital magnetism in the half-metallic Heusler alloys
• Half-metallic ferromagnets for magnetic tunnel junctions
• Stability of ferromagnetism in the half-metallic pnictides and similar compounds: A first-principles study
• A review of the electronic and magnetic properties of tetrahedrally bonded half-metallic ferromagnets
• Towards half-metallic interfaces: the Co${}_2$CrAl/InP contacts
• Electronic and magnetic properties of the (111) surfaces of NiMnSb
• Half-metallicity and magnetism in the Co${}_2$MnAl/CoMnVAl heterostructure
• Defects in CrAs and related compounds: a route to half-metallic ferrimagnetism
• Influence of defects on the electronic and magnetic properties of half-metallic CrAs, CrSe and CrSb zinc-blende compounds
• Role of defects and disorder in the half-metallic full-Heusler compounds
• Role of defects on the electronic and magnetic properties of CrAs/InAs and CrAs/CdSe half-metallic interfaces