The Kitaev model is an exactly solvable S= 1/2 spin model on a 2D honeycomb lattice, in
which the spins fractionalize into Majorana fermions and form a topological quantum spin …

We review the recent advances and current challenges in the field of strong spin-orbit
coupled Kitaev materials, with a particular emphasis on the physics beyond the exactly …

A Majorana fermion is a fermionic particle that is its own antiparticle. Since the theoretical
discovery by Ettore Majorana in 1937, the exotic particle has long been searched in particle …

The properties of transition metal compounds are largely determined by nontrivial interplay
of different degrees of freedom: charge, spin, lattice, and also orbital ones. Especially rich …

Quantum spin liquids are an exciting playground for exotic physical phenomena and
emergent many-body quantum states. The realization and discovery of quantum spin liquid …

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 …

Layered honeycomb magnets are of interest as potential realizations of the Kitaev quantum
spin liquid (KQSL), a quantum state with long-range spin entanglement and an exactly …

Recent studies have brought α-RuCl 3 to the forefront of experimental searches for materials
realizing Kitaev spin-liquid physics. This material exhibits strongly anisotropic exchange …

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 …

An external magnetic field can induce a transition in α-RuCl 3 from an ordered zigzag state
to a disordered state that is possibly related to the Kitaev quantum spin liquid. Here, we …