Elusive Dzyaloshinskii-Moriya interaction in monolayer Fe3GeTe2

2020/04/03 by Slimane Laref, S. Laref, Kyoung‐Whan Kim +3 · 46 citations
Materials Science · Physics and Astronomy · #2D Materials and Applications #Iron-based superconductors research #Magnetic properties of thin films #Physics #cond-mat.mtrl-sci

paper · pdf · doi:10.1103/physrevb.102.060402

published in Physical review. B./Physical review. B 102(6) (American Physical Society) · 5 pages, 6 figures

arxiv created 2020/04/03 · openalex created_date 2020/04/10 · openalex publication_date 2020/08/05 · arxiv updated 2020/08/12 · openalex updated_date 2026/08/05

Abstract

Using symmetry analysis and density functional theory calculations, we uncover the nature of the Dzyaloshinskii-Moriya interaction in monolayer Fe₃GeTe₂. We show that while such an interaction might result in small distortions of the magnetic texture in the short range, in the long range it favors in-plane N'eel spin spirals along equivalent directions of the crystal structure. Whereas our results show that the observed N'eel skyrmions cannot be explained by the Dzyaloshinskii-Moriya interaction at the monolayer level, they suggest that a canted magnetic texture shall arise at the boundary of Fe₃GeTe₂ nanoflakes or nanoribbons and, most interestingly, that homochiral planar magnetic textures could be stabilized.

Citations

• Generalized Gradient Approximation Made Simple
• Self-interaction correction to density-functional approximations for many-electron systems
• Anisotropic Superexchange Interaction and Weak Ferromagnetism

Cited by

• Tunable Néel–Bloch Magnetic Twists in Fe3GeTe2 with van der Waals Structure
• Ab initio study of anisotropic effects in two-dimensional Fe₃GeTe₂ using \bfk-dependent Green's functions