We report on the direct observation of the magneto-Peltier effect in a current-in-plane giant magnetoresistive (CIP-GMR) spin valve. By means of the recently developed thermoelectric imaging technique based on lock-in thermography, we demonstrate that thermoelectric cooling and heating are generated by applying a local magnetic field to the CIP-GMR spin-valve film, confirming the different Peltier coefficients of the spin valve between the parallel and antiparallel magnetization configurations. The cooling and heating positions are found to be tuned simply by changing the magnitude of the local magnetic field. This versatile and reconfigurable thermoelectric conversion functionality may provide a thermal management method for CIP-GMR magnetic sensors.
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Direct observation of magneto-Peltier effect in current-in-plane giant magnetoresistive spin valve
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26 August 2019
Research Article|
August 27 2019
Direct observation of magneto-Peltier effect in current-in-plane giant magnetoresistive spin valve
Hiroyasu Nakayama
;
Hiroyasu Nakayama
1
National Institute for Materials Science
, Tsukuba 305-0047, Japan
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Tomoya Nakatani
;
Tomoya Nakatani
1
National Institute for Materials Science
, Tsukuba 305-0047, Japan
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Ryo Iguchi
;
Ryo Iguchi
1
National Institute for Materials Science
, Tsukuba 305-0047, Japan
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Takeshi Seki
;
Takeshi Seki
1
National Institute for Materials Science
, Tsukuba 305-0047, Japan
2
Institute for Materials Research, Tohoku University
, Sendai 980-8577, Japan
3
Center for Spintronics Research Network, Tohoku University
, Sendai 980-8577, Japan
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Ken-ichi Uchida
Ken-ichi Uchida
a)
1
National Institute for Materials Science
, Tsukuba 305-0047, Japan
2
Institute for Materials Research, Tohoku University
, Sendai 980-8577, Japan
3
Center for Spintronics Research Network, Tohoku University
, Sendai 980-8577, Japan
4
Department of Mechanical Engineering, The University of Tokyo
, Tokyo 113-8656, Japan
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Hiroyasu Nakayama
1
Tomoya Nakatani
1
Ryo Iguchi
1
Takeshi Seki
1,2,3
Ken-ichi Uchida
1,2,3,4,a)
1
National Institute for Materials Science
, Tsukuba 305-0047, Japan
2
Institute for Materials Research, Tohoku University
, Sendai 980-8577, Japan
3
Center for Spintronics Research Network, Tohoku University
, Sendai 980-8577, Japan
4
Department of Mechanical Engineering, The University of Tokyo
, Tokyo 113-8656, Japan
a)
E-mail: [email protected]
Appl. Phys. Lett. 115, 092406 (2019)
Article history
Received:
July 19 2019
Accepted:
August 14 2019
Citation
Hiroyasu Nakayama, Tomoya Nakatani, Ryo Iguchi, Takeshi Seki, Ken-ichi Uchida; Direct observation of magneto-Peltier effect in current-in-plane giant magnetoresistive spin valve. Appl. Phys. Lett. 26 August 2019; 115 (9): 092406. https://doi.org/10.1063/1.5120569
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