Strongly correlated oxides for energy harvesting

ABSTRACT

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.

Graphical Abstract

KEYWORDS:

• Thermoelectric materials
• strongly correlated oxides
• Seebeck effect
• spin Hall effect
• spin Seebeck effect
• anomalous Nernst effect
• Weyl semimetal
• Dirac semimetal
• magnetic skyrmion

CLASSIFICATION:

• 50 Energy Materials
• 210 Thermoelectronics / Thermal transport / insulators

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by JST CREST [grant number JPMJCR15Q2] and JST PRESTO [grant numbers JPMJPR15R5; JPMJPR15R7].