Ground state properties of $\mathrm{N}{\mathrm{a}}_2\mathrm{Ir}{\mathrm{O}}_3$ determined from $\text{ab initio}$ Hamiltonian and its extensions containing Kitaev and extended Heisenberg interactions

Tsuyoshi Okubo, Kazuya Shinjo, Youhei Yamaji +4

We investigate the ground state properties of $\mathrm{N}{\mathrm{a}}_2\mathrm{Ir}{\mathrm{O}}_3$ based on numerical calculations of the recently proposed {\it ab initio} Hamiltonian represented by Kitaev and ex…