On the thermal Hall effect in the electrically insulating ferrimagnet yttrium iron garnet

This talk will present results from our recent experiments aimed at measuring the elements of the magneto-thermal conductivity tensor $\kappa _{\mathrm{ijk}}$ of the electrically insulating ferrimagnet yttrium iron garnet (YIG). We will report evidence of a non-zero contribution from $\kappa_{\mathrm{xyz}}$, which suggests the existence of a thermal Hall effect in this material. We will discuss the ramifications of these results in relation to spin caloritronic experiments, as well as some possible concepts for thermal-to-electrical energy conversion applications based on this phenomenon.