The temperature dependence of the spin Seebeck effect (SSE) in epitaxial Ni0.65Zn0.35Al0.8Fe1.2O4 (NZA ferrite) thin film has been investigated systematically. The SSE at high fields shows a bimodal distribution enhancement from 3 K to 300 K and is well fitted with a double-peak Lorentzian function. We speculate the symmetric SSE enhancement in Pt/NZA ferrite bilayer, which is different from the magnon polarons induced asymmetric spikes in the SSE of Pt/YIG [T. Kikkawa et al. Phys. Rev. Lett. 117, 207203 (2016)], may result from the magnon-phonon interactions occurring at the intersections of the quantized magnon and phonon dispersions. The SSE results are helpful for the investigation of the magnon-phonon interaction in the magnetic ultrathin films.
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2 April 2018
Research Article|
April 04 2018
The bimodal distribution spin Seebeck effect enhancement in epitaxial Ni0.65Zn0.35Al0.8Fe1.2O4 thin film
Hua Wang
;
Hua Wang
1
State Key Laboratory of Surface Physics and Department of Physics, Fudan University
, Shanghai 200433, China
2Collaborative Innovation Center of Advanced Microstructures,
Fudan University
, Shanghai 200433, China
3
Institute for Materials Research, Tohoku University
, Sendai 980-8577, Japan
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Dazhi Hou;
Dazhi Hou
a)
4
Advanced Institute for Materials Research, Tohoku University
, Sendai 980-8577, Japan
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Takashi Kikkawa
;
Takashi Kikkawa
3
Institute for Materials Research, Tohoku University
, Sendai 980-8577, Japan
4
Advanced Institute for Materials Research, Tohoku University
, Sendai 980-8577, Japan
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Rafael Ramos
;
Rafael Ramos
4
Advanced Institute for Materials Research, Tohoku University
, Sendai 980-8577, Japan
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Ka Shen;
Ka Shen
5
Department of Physics, Beijing Normal University
, Beijing 100875, China
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Zhiyong Qiu;
Zhiyong Qiu
4
Advanced Institute for Materials Research, Tohoku University
, Sendai 980-8577, Japan
6Key Laboratory of Materials Modification by Laser, Ion, and Electron Beams (Ministry of Education), School of Materials Science and Engineering,
Dalian University of Technology
, Dalian 116024, China
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Yao Chen
;
Yao Chen
3
Institute for Materials Research, Tohoku University
, Sendai 980-8577, Japan
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Maki Umeda;
Maki Umeda
3
Institute for Materials Research, Tohoku University
, Sendai 980-8577, Japan
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Yuki Shiomi;
Yuki Shiomi
7
Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo
, Hongo, Tokyo 113-8656, Japan
8
RIKEN Center for Emergent Matter Science (CEMS)
, Wako 351-0198, Japan
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Xiaofeng Jin;
Xiaofeng Jin
b)
1
State Key Laboratory of Surface Physics and Department of Physics, Fudan University
, Shanghai 200433, China
2Collaborative Innovation Center of Advanced Microstructures,
Fudan University
, Shanghai 200433, China
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Eiji Saitoh
Eiji Saitoh
3
Institute for Materials Research, Tohoku University
, Sendai 980-8577, Japan
4
Advanced Institute for Materials Research, Tohoku University
, Sendai 980-8577, Japan
9
Advanced Science Research Center, Japan Atomic Energy Agency
, Tokai 319-1195, Japan
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Appl. Phys. Lett. 112, 142406 (2018)
Article history
Received:
January 11 2018
Accepted:
March 16 2018
Connected Content
Citation
Hua Wang, Dazhi Hou, Takashi Kikkawa, Rafael Ramos, Ka Shen, Zhiyong Qiu, Yao Chen, Maki Umeda, Yuki Shiomi, Xiaofeng Jin, Eiji Saitoh; The bimodal distribution spin Seebeck effect enhancement in epitaxial Ni0.65Zn0.35Al0.8Fe1.2O4 thin film. Appl. Phys. Lett. 2 April 2018; 112 (14): 142406. https://doi.org/10.1063/1.5022195
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