@article{oai:nagoya.repo.nii.ac.jp:02001710, author = {Kawasaki, Shuji and Nakano, Akitoshi and Taniguchi, Hiroki and Cho, Hai Jun and Ohta, Hiromichi and Nakamura, Fumihiko and Terasaki, Ichiro}, issue = {6}, journal = {Journal of the Physical Society of Japan}, month = {Jun}, note = {We have measured and analyzed the in-plane thermal diffusivity of the Mott insulator Ca2RuO4 around room temperature under external currents with an infrared camera as a contactless thermometer. We find that the thermal diffusivity decreases by 40% for an external current density of 14 A/cm^2. This large impact on lattice properties highly nontrivial in the sense that the external current primarily affects the electronic states. A possible explanation for this is discussed.}, title = {Thermal Diffusivity of the Mott Insulator Ca2RuO4 in a Non-equilibrium Steady State}, volume = {90}, year = {2021} }