Unconventional spin dynamics in the honeycomb-lattice material $\alpha$-RuCl${}_3$: high-field ESR studies

A. N. Ponomaryov, E. Schulze, J. Wosnitza +8

We present high-field electron spin resonance (ESR) studies of the honeycomb-lattice material $\alpha$-RuCl${}_3$, a prime candidate to exhibit Kitaev physics. Two modes of antiferromagne…