Magnetic skyrmion textures are realized mainly in non-centrosymmetric, eg chiral or polar,
magnets. Extending the field to centrosymmetric bulk materials is a rewarding challenge …

The layered compound α-RuCl 3 is composed of a honeycomb lattice of magnetic Ru 3+
ions with the 4 d 5 electronic state. We have investigated the magnetic properties of α-RuCl …

Realizing a state of matter in two dimensions has repeatedly proven a novel route of
discovering new physical phenomena. Van der Waals (vdW) materials have been at the …

The magnetic structure of the quasi-two-dimensional antiferromagnet NiPS 3 has been
determined by magnetometry and a variety of neutron diffraction techniques. The …

We argue that several empirical constraints strongly restrict parameters of the effective
microscopic spin model describing α-RuCl 3. In particular, such constraints dictate a …

Abstract Na 2 IrO 3, a honeycomb 5d 5 oxide, has been recently identified as a potential
realization of the Kitaev spin lattice. The basic feature of this spin model is that for each of …

Na 2 Co 2 TeO 6 is a proposed approximate Kitaev magnet, yet its actual magnetic
interactions are elusive due to a lack of knowledge on the full excitation spectrum. Here …

The fundamental optical excitations of correlated transition-metal compounds are typically
identified with multielectronic transitions localized at the transition-metal site, such as dd …

The quest for Kitaev quantum spin liquids has led to great interest in honeycomb quantum
magnets with strong spin-orbit coupling. It has been recently proposed that even Mott …

Possible Néel orderings of antiferromagnetically coupled spins on a kagomé lattice are
studied using linear-spin-wave theory and high-temperature expansions. Spin-wave …