@article{oai:nagoya.repo.nii.ac.jp:00024927, author = {Nishina, Yasuo and Okazaki, Ryuji and Yasu, Yukio and Nakamura, Fumihiko and Terasaki, Ichiro}, issue = {9}, journal = {Journal of the Physical Society of Japan}, month = {Sep}, note = {We report the thermoelectric transport properties in the orbital-ordered Mott insulating phase of Ca2RuO4 close to and far from equilibrium. Near equilibrium conditions where the temperature gradient is only applied to the sample, an insulating but non-monotonic temperature variation of the Seebeck coefficient is observed, which is accounted for in terms of a temperature-induced suppression of the orbital order. In non-equilibrium conditions where we have applied high electrical currents, we find that the Seebeck coefficient is anomalously increased in magnitude with increasing external current. The present result clearly demonstrates a non-thermal effect since the heating simply causes a decrease of the Seebeck coefficient, implying a non-trivial non-equilibrium effect such as a modification of the spin and orbital state in currents.}, pages = {093707--093707}, title = {Anomalous Thermoelectric Response in an Orbital-Ordered Oxide Near and Far from Equilibrium}, volume = {86}, year = {2017} }