Multiscale studies of complex magnetism of nanostructures based on first principles

A. Antal, B. Lazarovits, L. Balogh, L. Udvardi, L. Szunyogh

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We present a first principles formulation that allows the derivation of parameters of a classical spin-model. In particular, relativistic effects are included, inducing tensorial exchange interactions and on-site anisotropy. Three applications of the method are shown: (i) by using a mean field treatment of the spin-model we calculate the temperature dependence of the magnetic anisotropy energy of a Co3Cu(001) film; (ii) in terms of Monte Carlo simulations for an Fe2/W(110) film we demonstrate the sensitivity of the magnetic ground state to the layer relaxations; and (iii) we also investigate the magnetic ground state of an equilateral Cr trimer on top of a Au(111) surface. These examples clearly highlight the importance of the anisotropic exchange couplings and of the Dzyaloshinsky-Moriya interactions in studying and understanding the magnetism of nanostructures.

Original languageEnglish
Pages (from-to)2715-2724
Number of pages10
JournalPhilosophical Magazine
Volume88
Issue number18-20
DOIs
Publication statusPublished - Jun 2008

Keywords

  • Exchange interactions
  • Magnetic anisotropy
  • Magnetic nanoparticles
  • Magnetic nanostructures
  • Magnetic properties
  • Thin films

ASJC Scopus subject areas

  • Condensed Matter Physics

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