Magnonics or magnon spintronics is an emerging field focusing on generating, detecting,
and manipulating magnons. As charge‐neutral quasi‐particles, magnons are promising …

Two-dimensional (2D) van der Waals (vdW) magnets have been a fertile playground for the
discovery and exploration of physical phenomena and new physics. In this Letter, we report …

Spin and lattice are two fundamental degrees of freedom in a solid, and their fluctuations
about the equilibrium values in a magnetic ordered crystalline lattice form quasiparticles …

Quantum spin liquids have been drawing much attention in recent years as a platform to
develop future quantum technologies, such as topological quantum computing. In particular …

The study of the magnonic thermal Hall effect in magnets with Dzyaloshinskii-Moriya
interaction (DMI) has recently drawn attention because of the underlying topology …

CrBr 3 is an excellent realization of the two-dimensional honeycomb ferromagnet, which
offers a bosonic equivalent of graphene with Dirac magnons and topological character. We …

Determining and explaining the presence of a gap at a magnon crossing point is a critical
step to characterize the topological properties of a material. An inelastic neutron scattering …

Cr I 3 is a prototypical van der Waals ferromagnet with a magnetic honeycomb lattice.
Previous inelastic neutron scattering studies have suggested topological nature of its …

We consider quantum condensed matter systems without particle-number conservation.
Since the particle number is not a good quantum number, states belonging to different …

Motivated by the potential of atomically thin magnets towards achieving tunable high-
frequency magnonics, we detail the spin-wave dispersion of bilayer CrI 3. We demonstrate …