Honeycomb rare-earth magnets with anisotropic exchange interactions

Abstract

We study the rare-earth magnets on a honeycomb lattice, and are particularly interested in the experimental consequences of the highly anisotropic spin interaction due to the spin-orbit entanglement. We perform a high-temperature series expansion using a generic nearest-neighbor Hamiltonian with anisotropic interactions, and obtain the heat capacity, the parallel and perpendicular spin susceptibilities, and the magnetic torque coefficients. We further examine the electron spin resonance linewidth as an important signature of the anisotropic spin interactions. Due to the small interaction energy scale of the rare-earth moments, it is experimentally feasible to realize the strong-field regime. Therefore, we perform the spin-wave analysis and study the possibility of topological magnons when a strong field is applied to the system. The application and relevance to the rare-earth Kitaev materials are discussed.

arXiv commentversion 3

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Cited by in corpus (15)

• Van Hove singularity in the magnon spectrum of the antiferromagnetic quantum honeycomb lattice
• Rare-earth chalcohalides: A family of van der Waals layered Kitaev spin liquid candidates
• Computational design of $f$-electron Kitaev magnets: honeycomb and hyperhoneycomb compounds $A_2$PrO${}_3$ ($A=$ alkali metals)
• Anisotropic exchange coupling and ground state phase diagram of Kitaev compound YbOCl
• Kitaev Quantum Spin Liquids
• Spiral-spin-liquid behaviors and persistent reciprocal kagomé structure in frustrated van der Waals magnets and beyond
• Ground State Magnetic Structure and Magnetic Field Effects in the Layered Honeycomb Antiferromagnet YbOCl
• Canted antiferromagnetic order and spin dynamics in the honeycomb-lattice Tb2Ir3Ga9
• Magnetic properties of a spin-orbit entangled Jeff = 1/2 honeycomb lattice
• Interplay of magnetic field and trigonal distortion in the honeycomb $\Gamma$ model: Occurrence of a spin-flop phase
• Topological phase transitions and thermal Hall effect in a noncollinear spin texture
• Unraveling the magnetic ground-state in alkali-metal lanthanide oxide Na${}_2$PrO${}_3$
• Electron spin resonance study on the 4f honeycomb quantum magnet YbCl3
• Ligand-SOC enhanced $4f^5$ Kitaev antiferromagnet: Application to ${\mathrm{SmI}}_3$
• Field-induced multipolar character in the dipolar ground state of the honeycomb rare-earth chalcohalide NdOF