A Magnon Band Analysis of GdRu2Si2 in the Field-Polarized State

Abstract

Understanding the formation of skyrmions in centrosymmetric materials is a problem of fundamental and technological interest. GdRu2Si2 is one such candidate material which has been shown to host a variety of multi-Q magnetic structures, including in zero-field. Here, inelastic neutron scattering is used to measure the spin excitations in the field-polarized phase of GdRu2Si2. Linear spin wave theory and a method of interaction invariant path analysis are used to derive a Hamiltonian accounting for the observed spectra, and comparisons to \textit{ab initio} calculations are made. No evidence for anisotropic or higher order-exchange terms beyond bilinear Heisenberg exchange is found. This is discussed in the context of the multi-Q states existing at lower fields, for which these types of terms have previously been conceived to be significant in the formation of multi-Q ground states.

References in corpus (30)

• Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
• Mantid - Data Analysis and Visualization Package for Neutron Scattering and $\mu SR$ Experiments
• Continuous excitations of the triangular-lattice quantum spin liquid YbMgGaO4
• Nanometric square skyrmion lattice in a centrosymmetric tetragonal magnet
• Topological Magnetic Phase in the Candidate Weyl Semimetal CeAlGe
• Meron, skyrmion, and vortex crystals in centrosymmetric tetragonal magnets
• Imaging the coupling between itinerant electrons and localised moments in the centrosymmetric skyrmion magnet GdRu2Si2
• Thermodynamically stable skyrmion lattice in tetragonal frustrated antiferromagnet with dipolar interaction
• Zoology of multiple-Q spin textures in a centrosymmetric tetragonal magnet with itinerant electrons
• Multi-step topological transitions among meron and skyrmion crystals in a centrosymmetric magnet
• Magnetic Interactions of the Centrosymmetric Skyrmion Material Gd2PdSi3
• The Double-$Q$ Ground State with Topological Charge Stripes in the Skyrmion Candidate ${\text{GdRu}}_{\text{2}}{\text{Si}}_{\text{2}}$
• Fermi-surface origin of skyrmion lattices in centrosymmetric rare-earth intermetallics
• Skyrmions in magnetic materials
• Controlling the helicity of magnetic skyrmions by electrical field in frustrated magnets
• Incommensurate magnetic orders and topological Hall effect in the square-net centrosymmetric EuGa${}_2$Al${}_2$ system
• Classical spin dynamics based on SU($N$) coherent states
• Rhombic skyrmion lattice coupled with orthorhombic structural distortion in EuAl${}_4$
• Quantum oscillations in a centrosymmetric skyrmion-hosting magnet GdRu2Si2
• Insight into the electronic structure of the centrosymmetric skyrmion magnet GdRu${}_2$Si${}_2$
• Geometric integration of classical spin dynamics via a mean-field Schrödinger equation
• Thermodynamic insights into the intricate magnetic phase diagram of EuAl${}_4$
• Ab initio exploration of short-pitch skyrmion materials: Role of orbital frustration
• Vector vorticity of skyrmionic texture: an internal degree of freedom tunable by magnetic field
• Competing charge and magnetic order in the candidate centrosymmetric skyrmion host EuGa${}_2$Al${}_2$
• Field-orientation-dependent magnetic phases in GdRu${}_2$Si${}_2$ probed with muon-spin spectroscopy
• Lattice-commensurate skyrmion texture in a centrosymmetric breathing kagome magnet
• SP-STM study of the multi-Q phases in GdRu2Si2
• Real-space Visualization of Charge Density Wave Induced Local Inversion-Symmetry Breaking in a Skyrmion Magnet
• Reentrant multiple-$\mathbf{q}$ magnetic order and a "spin-cholesteric" phase in Sr${}_3$Fe${}_2$O${}_7$

Cited by in corpus (1)

• Thermodynamic theory of square skyrmion lattice in tetragonal frustrated antiferromagnets