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 …

We study the exchange interactions and resulting magnetic phases in the honeycomb
cobaltates. For a broad range of trigonal crystal fields acting on Co 2+ ions, the low-energy …

Co 2+ ions in an octahedral crystal field stabilize aj eff= 1/2 ground state with an orbital
degree of freedom and have been recently put forward for realizing Kitaev interactions, a …

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 …

Finding new materials with antiferromagnetic (AFM) Kitaev interaction is an urgent issue for
quantum magnetism research. We conclude that Na 3 Co 2 SbO 6 and Na 2 Co 2 TeO 6 are …

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 …

As a candidate Kitaev material, Na 2 Co 2 TeO 6 exhibits intriguing magnetism on a
honeycomb lattice that is believed to be C 3 symmetric. Here we report a neutron diffraction …

We present a comprehensive study of single crystals of Na 2 Co 2 TeO 6, a putative Kitaev
honeycomb magnet, focusing on its low-temperature phase behaviors. A new thermal phase …

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 …