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 language | English |
|---|---|
| Article number | 123003 |
| Journal | Applied Physics Express |
| Volume | 12 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2019 Dec 1 |
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In: Applied Physics Express, Vol. 12, No. 12, 123003, 01.12.2019.
Research output: Contribution to journal › Article › peer-review
TY - JOUR
T1 - Electric-field-induced on-off switching of anomalous Ettingshausen effect in ultrathin Co films
AU - Nakayama, Hiroyasu
AU - Hirai, Takamasa
AU - Uzuhashi, Jun
AU - Iguchi, Ryo
AU - Ohkubo, Tadakatsu
AU - Koyama, Tomohiro
AU - Chiba, Daichi
AU - Uchida, Ken Ichi
N1 - Funding Information: Hiroyasu Nakayama Takamasa Hirai Jun Uzuhashi Ryo Iguchi Tadakatsu Ohkubo Tomohiro Koyama Daichi Chiba Ken-ichi Uchida Hiroyasu Nakayama Takamasa Hirai Jun Uzuhashi Ryo Iguchi Tadakatsu Ohkubo Tomohiro Koyama Daichi Chiba Ken-ichi Uchida National Institute for Materials Science, Tsukuba 305-0047, Japan Department of Applied Physics, The University of Tokyo, Tokyo 113-8656, Japan The Institute of Scientific and Industrial Research, Osaka University, Osaka 567-0047, Japan Center for Spintronics Research Network, Osaka University, Osaka 560-6671, Japan Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan Center for Spintronics Research Network, Tohoku University, Sendai 980-8577, Japan These authors contributed equally to this work. Hiroyasu Nakayama, Takamasa Hirai, Jun Uzuhashi, Ryo Iguchi, Tadakatsu Ohkubo, Tomohiro Koyama, Daichi Chiba and Ken-ichi Uchida 2019-12-01 2019-11-20 14:10:14 cgi/release: Article released bin/incoming: New from .zip Core Research for Evolutional Science and Technology https://doi.org/10.13039/501100003382 JPMJCR17I1 Japan Society for the Promotion of Science https://doi.org/10.13039/501100001691 JP17H04808 JP18H05246 JP18J10734 JP18K14116 JP18K18849 JP19H00860 JP19H02585 yes 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. 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PY - 2019/12/1
Y1 - 2019/12/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85076791078&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85076791078&partnerID=8YFLogxK
U2 - 10.7567/1882-0786/ab55bb
DO - 10.7567/1882-0786/ab55bb
M3 - Article
AN - SCOPUS:85076791078
SN - 1882-0778
VL - 12
JO - Applied Physics Express
JF - Applied Physics Express
IS - 12
M1 - 123003
ER -