Spin Wave Dispersion of the van der Waals Antiferromagnet NiPS₃

2025/04/29 by Ritesh Das, Das, Ritesh, Rob den Teuling +11 · 1 voice
Physics and Astronomy · #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #cond-mat.mes-hall

paper · pdf · doi:10.48550/arxiv.2504.20540

Abstract

We calculate the magnon dispersion spectra of the two-dimensional zigzag van der Waals antiferromagnet NiPS₃ for monolayer, bilayer, and bulk systems as a function of an external magnetic field. We calculate the exchange and anisotropy constants in our spin model by first principles. We can accurately explain the transition from a collinear to a canted ground state for a magnetic field applied normal to the (in-plane) easy-axis, and a spin-flop transition when the field is parallel to it. A topologically protected Dirac nodal line is present and robust with respect to both external and anisotropy fields.

Citations

• Transport phenomena in spin caloritronics
• Cavity magnomechanics
• Spin Caloritronics
• Efficient index handling of multidimensional periodic boundary conditions
• Generalized Gradient Approximation Made Simple
• Local spin density functional approach to the theory of exchange interactions in ferromagnetic metals and alloys

Discussions

• Ritesh Das put our latest manusctipt on spin wave spectra in a 2D van der Waals antiferromagnet NiPS3 on arXiv today, arxiv.org/abs/2504.20540 [bsky, 0 points, 0 comments]

Related

• Magnon gap excitations and spin-entangled optical transition in van der Waals antiferromagnet NiPS3
• Spin waves in the bilayer van der Waals magnet CrSBr
• 3D Heisenberg universality in the Van der Waals antiferromagnet NiPS₃
• Dipolar-exchange spin waves in thin bilayers
• Antiferromagnetic Dispersion Relations and Nature of Magnon Pressure