Skyrmion formation in Ni-based Janus dihalide monolayers: Interplay between magnetic frustration and Dzyaloshinskii-Moriya interaction
ORAL
Abstract
I will present a comprehensive theory of the magnetic phases in monolayer nickel-based Janus dihalides (NiIBr,NiICl,NiBrCl) by using first principle calculations and atomistic simulations. The parameters of the interacting spin Hamiltonian extracted from ab-initio calculations show that nickel-dihalide Janus monolayers exhibit varying degrees of magnetic frustration together with a large Dzyaloshinskii_Moriya interaction due to their inherent inversion breaking symmetry. The atomistic simulations reveal a delicate interplay between these two competing magnetic interactions in giving rise to skyrmion formation.
*JD, JK, OE and AB acknowledge support from NSF Award No. DMR 1904716. S.T acknowledges DMR-2206987 and DOE-SC0020653. MA is supported by Fulbright Scholarship. EA acknowledges the Alexander von Humboldt Foundation for a Research Fellowship for Experienced Researchers. TG was supported by the Scientific and Technological Research Council of Turkey (TUBITAK) under the 2214 scholarship. Computational resources used in this work were provided by the TUBITAK (The Scientific and Technical Research Council of Turkey) ULAKBIM, High Performance and Grid Computing Center (Tr-Grid 16 e-Infrastructure), and the ASU Research Computing Center for HPC resources.
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Publication: None
Presenters
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Jyotirish Das
- Arizona State University