Magnetic excitations and optical transitions in the multiferroic spin-1/2 system LiCu${}_2$O${}_2$

D. Hüvonen, U. Nagel, T. Rõõm +4

Magnetic excitations in cycloidal magnet LiCu${}_2$O${}_2$ are explored using THz absorption spectroscopy in magnetic fields up to 12 T. Below the spin ordering temperature we observe…