Precise determination of low energy electronuclear Hamiltonian for LiY${}_{1-x}$Ho${}_x$F${}_4$

A. Beckert, R. I. Hermans, M. Grimm +8

We use complementary optical spectroscopy methods to directly measure the lowest crystal-field energies of the rare-earth quantum magnet LiY${}_{1-x}$Ho${}_x$F${}_4$, including their…