Electric-field-induced on-off switching of anomalous Ettingshausen effect in ultrathin Co films

Hiroyasu Nakayama, Takamasa Hirai, Jun Uzuhashi, Ryo Iguchi, Tadakatsu Ohkubo, Tomohiro Koyama, Daichi Chiba, Ken Ichi Uchida

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We have investigated the electric field effect on magneto-thermoelectric conversion in ultrathin Co films with a naturally-oxidized surface and a solid-state capacitor structure. By means of the thermoelectric imaging technique based on the lock-in thermography, we demonstrate the reversible on-off switching of heat currents generated by the anomalous Ettingshausen effect in response to the electric-field-induced magnetic phase transition in the Co films. The electric-field-induced switching property is found to be tuned by changing the Co thickness. Our finding will provide a method for reconfigurable and pin-point switching of thermoelectric conversion properties in spin-caloritronic devices.

Original languageEnglish
Article number123003
JournalApplied Physics Express
Volume12
Issue number12
DOIs
Publication statusPublished - 2019 Dec 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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