By considering two ab initio-based complementary approaches, we analyze the electronic
structure and extract effective spin models of BaCo 2 (AsO 4) 2, a honeycomb material which …

In extended Heisenberg-Kitaev-Gamma-type spin models, hidden-SU (2)-symmetric points
are isolated points in parameter space that can be mapped to pure Heisenberg models via …

The S= 3 2 Kitaev honeycomb model (KHM) is unique among the spin-S Kitaev models due
to a massive ground-state quasidegeneracy that hampered previous numerical and …

The Kitaev model is a fascinating example of an exactly solvable model displaying a spin-
liquid ground state in two dimensions. However, deviations from the original Kitaev model …

The Kitaev interaction in a honeycomb lattice with higher-spin S has been one of the central
attractions, as it may offer quantum spin liquids. A microscopic theory showed that when the …

Motivated by the possible triple-Q classical order in the Kitaev candidate material Na 2 Co 2
TeO 6, we investigate microscopic models that may stabilize the triple-Q order by studying …

We provide analytical and numerical insights into the phase diagram and other properties of
the extended Kitaev-Heisenberg model on the honeycomb lattice in the easy-plane limit, in …

The Kitaev model, whose ground state is a quantum spin liquid (QSL), was originally
conceived for spin S= 1/2 moments on a honeycomb lattice. In recent years, the model has …

In this work, we study effects of magnon interactions in the excitation spectrum of CoNb 2 O
6 in the quantum paramagnetic phase in transverse field, where the 1/S spin-wave theory …

We determine the phase diagrams of anisotropic Kitaev-Heisenberg models on the
honeycomb lattice using parton mean-field theories based on different Majorana fermion …