Spin-orbit coupling controlled two-dimensional magnetism in chromium trihalides
arxiv(2024)
Abstract
CrX_3 (X = Cl, Br, I) have the same crystal structure and Hamiltonian but
different ligand spin-orbit coupling (SOC) constant λ_X, providing
excellent material platform exploring for exotic two-dimensional (2D) spin
orders. Their microscopic mechanism underlying 2D spin physics and Hamiltonian
remain unestablished, along with experimental corroboration of Kitaev exchange
interaction, central to realizing topological quantum spin liquids. We report
Kitaev interaction signature in magnetic anisotropy measured by ferromagnetic
resonance (FMR) spectroscopy. We present measured values of Heisenberg J,
Kitaev K, and off-diagonal symmetric Γ exchange interactions in CrX_3
determined using FMR and exact diagonalization. K and Γ exhibit dominant
quadratic dependencies on λ_X, indicating its central role in 2D
magnetism. Our study provides foundation for exploring exotic 2D magnetic
topologies by tuning intrinsic material parameters such as SOC.
MoreTranslated text
AI Read Science
Must-Reading Tree
Example
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined