Relativistic and thermal effects on the magnon spectrum of a ferromagnetic monolayer

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A spin model including magnetic anisotropy terms and Dzyaloshinsky-Moriya interactions is studied for the case of a ferromagnetic monolayer with C2v symmetry like Fe/W(110). Using the quasiclassical stochastic Landau-Lifshitz-Gilbert equations, the magnon spectrum of the system is derived using linear response theory. The Dzyaloshinsky-Moriya interaction leads to asymmetry in the spectrum, while the anisotropy terms induce a gap. It is shown that, in the presence of lattice defects, both the Dzyaloshinsky-Moriya interactions and the two-site anisotropy lead to a softening of the magnon energies. Two methods are developed to investigate the magnon spectrum at finite temperatures. The theoretical results are compared to atomistic spin dynamics simulations and good agreement is found between them.

Original languageEnglish
Article number506002
JournalJournal of Physics Condensed Matter
Volume25
Issue number50
DOIs
Publication statusPublished - Dec 18 2013

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Anisotropy
relativistic effects
Thermal effects
temperature effects
Monolayers
Hot Temperature
Spin dynamics
anisotropy
Crystal defects
Magnetic anisotropy
interactions
spin dynamics
softening
Computer simulation
asymmetry
Temperature
defects
symmetry
simulation
temperature

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Materials Science(all)
  • Medicine(all)

Cite this

Relativistic and thermal effects on the magnon spectrum of a ferromagnetic monolayer. / Rózsa, L.; Udvardi, L.; Szunyogh, L.

In: Journal of Physics Condensed Matter, Vol. 25, No. 50, 506002, 18.12.2013.

Research output: Contribution to journalArticle

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