In the recent years, the thermal Hall transport has risen as an important diagnosis of the
physical properties of the elementary excitations in various quantum materials, especially …

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 …

An effective low-energy Hamiltonian of itinerant electrons for iridium oxide Na 2 IrO 3 is
derived by an ab initio downfolding scheme. The model is then reduced to an effective spin …

The spin-1/2 Heisenberg model on the pyrochlore lattice is an iconic frustrated three-
dimensional spin system with a rich phase diagram. Besides hosting several ordered …

The main characteristic of Mott insulators, as compared to band insulators, is to host low-
energy spin fluctuations. In addition, Mott insulators often possess orbital degrees of …

The crystal structure, magnetic ground state, and the temperature-dependent microscopic
spin-spin correlations of the frustrated honeycomb lattice antiferromagnet N a 2 C o 2 Te O 6 …

We have studied the magnetic properties of Na 2 Co 2 TeO 6, which features a honeycomb
lattice of magnetic Co 2+ ions, through macroscopic characterization and neutron diffraction …

The Kitaev-Heisenberg (KH) model has been proposed to capture magnetic interactions in
iridate Mott insulators on the honeycomb lattice. We show that analogous interactions arise …

A Kitaev-Heisenberg-J 2-J 3 model is proposed to describe the Mott-insulating layered
iridates A 2 IrO 3 (A= Na, Li). The model is a combination of the Kitaev honeycomb model …

We investigate the J 1-J 2 Heisenberg model on the triangular lattice with an additional
scalar chirality term and show that a chiral spin liquid is stabilized in a sizable region of the …