Spin dynamics and continuum spectra of the honeycomb J1-J2 antiferromagnetic Heisenberg model

Cheng Gu, Shun-Li Yu, Jian-Xin Li

We employ the spin cluster perturbation theory to investigate the dynamical properties of the antiferromagnetic $J_1$-$J_2$ Heisenberg model on the honeycomb lattice. We obtain…