We review recent advances in strongly correlated oxides as thermoelectric materials in pursuit of energy harvesting. We discuss two topics: one is the enhancement of the ordinary thermoelectric properties by controlling orbital degrees of freedom and orbital fluctuation not only in bulk but also at the interface of correlated oxides. The other topic is the use of new phenomena driven by spin-orbit coupling (SOC) of materials. In 5d electron oxides, we show some SOC-related transport phenomena, which potentially contribute to energy harvesting. We outline the current status and a future perspective of oxides as thermoelectric materials.
Keywords: 210 Thermoelectronics / Thermal transport / insulators; 50 Energy Materials; Dirac semimetal; Seebeck effect; Thermoelectric materials; Weyl semimetal; anomalous Nernst effect; magnetic skyrmion; spin Hall effect; spin Seebeck effect; strongly correlated oxides.