Magnetocrystalline anisotropy of Fe, Co, and Ni slabs from density functional theory and tight-binding models

L. Le Laurent, C. Barreteau, and T. Markussen
Phys. Rev. B 100, 174426 – Published 22 November 2019

Abstract

We report magnetocrystalline anisotropy (MCA) calculations of Fe, Co, and Ni slabs of various thicknesses and crystallographic orientations from two density functional theory codes based either on a plane wave or a local atomic basis set expansion and a magnetic tight-binding method. We analyze the evolution of the MCA with the number of layers of the slabs. The decomposition of MCA into contributions of atomic sites helps understanding the oscillatory behavior of the MCA with the slab thickness and highlights the role of finite size effects. We also identify some specific systems with enhanced MCA. A k space as well as a band-filling analysis show very rich features of the MCA that could be used to tailor systems with enhanced magnetic properties. Finally, this work can serve as a benchmark for MCA calculations.

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  • Received 9 July 2019

DOI:https://doi.org/10.1103/PhysRevB.100.174426

©2019 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

L. Le Laurent1, C. Barreteau2, and T. Markussen3

  • 1SPEC, CEA, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette, France
  • 2SPEC, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette, France
  • 3Synopsys Denmark, Fruebjergvej 3, Postbox 4, DK-2100 Copenhagen, Denmark

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Issue

Vol. 100, Iss. 17 — 1 November 2019

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