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Title: Anisotropy in layered half-metallic Heusler alloy superlattices

We show that when two Heusler alloys are layered in the [001], [110], or [111] directions for various thicknesses to form a superlattice, the Slater-Pauling rule may still be satisfied and the resulting superlattice is often half-metallic with gaps comparable to or larger than those of its constituents. In addition, uniaxial magnetocrystalline anisotropy is induced because of the differences in the electronic structure of the two Heuslers in the superlattice. Various full-full, full-half, and half-half Heusler superlattices are studied, and potential half-metallic superlattices with perpendicular magnetocrystalline anisotropy are identified.
Authors:
; ; ;  [1] ;  [2] ;  [3] ; ;  [4]
  1. Center for Materials for Information Technology, University of Alabama, Tuscaloosa, Alabama 35487 (United States)
  2. (United States)
  3. Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487 (United States)
  4. Department of Electrical and Computer Engineering, University of Virginia, Charlottesville, Virginia 22904 (United States)
Publication Date:
OSTI Identifier:
22494937
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 119; Journal Issue: 4; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANISOTROPY; ELECTRONIC STRUCTURE; HEUSLER ALLOYS; POTENTIALS; SUPERLATTICES; THICKNESS