The exactly solvable Kitaev model on the honeycomb lattice has recently received
enormous attention linked to the hope of achieving novel spin-liquid states with …

Recently, the effects of spin-orbit coupling (SOC) in correlated materials have become one
of the most actively studied subjects in condensed matter physics, as correlations and SOC …

Quantum spin liquids have fascinated condensed matter physicists for decades because of
their unusual properties such as spin fractionalization and long-range entanglement. Unlike …

Spin textures with nontrivial topology, such as vortices and skyrmions, have attracted
attention as a source of unconventional magnetic, transport, and optical phenomena …

In transition-metal compounds with partially filled 4 d and 5 d shells spin–orbit
entanglement, electronic correlations, and crystal-field effects conspire to give rise to a …

We theoretically investigate multiple-Q spin textures, which are composed of superpositions
of spin density waves with different wave numbers, for an effective spin model of …

We study spin-wave excitations in α-RuCl 3 by the spin-wave theory. Starting from the five-
orbital Hubbard model and the perturbation theory, we derive an effective isospin-1/2 model …

Magnetic insulators in the regime of strong spin–orbit coupling exhibit intriguing behaviors in
external magnetic fields, reflecting the frustrated nature of their effective interactions. We …

Hexagonal perovskites, in contrast to the more familiar perovskites, when oxides, allow for
face-sharing of metal–oxygen octahedra or trigonal prisms within their structural frameworks …

We have explored the hidden symmetries of a generic four-parameter nearest-neighbor spin
model, allowed in honeycomb-lattice compounds under trigonal compression. Our method …