Anisotropic thermal transport in magnetic intercalates Fe${}_x$TiS${}_2$

We present a study of the of thermal transport in thin single crystals of iron-intercalated titanium disulphide, Fe${}_x$TiS${}_2$ for $0\le x\le 0.20$. We determine the distribution of intercalants using high-resolution crystallographic and magnetic measurements, confirming the insertion of Fe without long-range ordering. We find that iron intercalation perturbs the lattice very little, and suppresses the tendency of TiS${}_2$ to self-intercalate with excess Ti. We observe trends in the thermal conductivity that are compatible with our ab initio calculations of thermal transport in perfectly stoichiometric TiS${}_2$.