FeGeTe attracts significant attention due to technological perspectives of realizing room temperature ferromagnetism in two-dimensional materials. Here we show that due to structural peculiarities of the FeGeTe monolayer, short distance between the neighboring iron atoms induces a strong exchange coupling. This strong coupling allows us to consider them as an effective cluster with a magnetic moment , giving rise to a simplified spin model on a bipartite honeycomb lattice with the reduced number of long-range interactions. The simplified model perfectly reproduces the results of the conventional spin model, but allows for a more tractable description of the magnetic properties of FeGeTe, which is important, e.g., for large-scale simulations. Also, we discuss the role of biaxial strain in the stabilization of ferromagnetic ordering in FeGeTe.
Original languageEnglish
Article number171456
JournalJournal of Magnetism and Magnetic Materials
Issue numberPart B
Publication statusPublished - 1 Dec 2023

    WoS ResearchAreas Categories

  • Materials Science, Multidisciplinary
  • Physics, Condensed Matter

    ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

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