We evaluate the spin Hall angle (SHA) for Pt by using spin Hall effect tunneling spectroscopy (SHT) in combination with weak antilocalization analysis. From the angular dependence of the SHT signal, we confirm that the effects of the anomalous Hall effect and anisotropic magnetoresistance are negligible in the SHT signal. Temperature dependence of the obtained SHA indicates that the intrinsic and/or side jump contributions evaluated for Pt in the present study are in good agreement with those reported in previous studies using other methods. On the other hand, there is no correlation in the extrinsic skew scattering contributions associated with the residual resistance of Pt in each study, implying the presence of unveiled impurity and interface effects.
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Temperature-dependent spin Hall effect tunneling spectroscopy in platinum
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14 October 2019
Research Article|
October 14 2019
Temperature-dependent spin Hall effect tunneling spectroscopy in platinum
Keita Nakagawara;
Keita Nakagawara
1
Department of Materials Science, Graduate School of Engineering, Tohoku University
, Sendai 980-8579, Japan
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Shinya Kasai;
Shinya Kasai
2
National Institute for Materials Science
, Tsukuba 305-0047, Japan
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Jeongchun Ryu
;
Jeongchun Ryu
a)
1
Department of Materials Science, Graduate School of Engineering, Tohoku University
, Sendai 980-8579, Japan
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Seiji Mitani
;
Seiji Mitani
2
National Institute for Materials Science
, Tsukuba 305-0047, Japan
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Luqiao Liu;
Luqiao Liu
3
Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology
, Cambridge, Massachusetts 02139, USA
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Makoto Kohda;
Makoto Kohda
1
Department of Materials Science, Graduate School of Engineering, Tohoku University
, Sendai 980-8579, Japan
4
Center for Spintronics Research Network, Tohoku University
, Sendai 980-8577, Japan
5
Center for Science and Innovation in Spintronics (Core Research Cluster), Tohoku University
, Sendai 980-8577, Japan
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Junsaku Nitta
Junsaku Nitta
b)
1
Department of Materials Science, Graduate School of Engineering, Tohoku University
, Sendai 980-8579, Japan
4
Center for Spintronics Research Network, Tohoku University
, Sendai 980-8577, Japan
5
Center for Science and Innovation in Spintronics (Core Research Cluster), Tohoku University
, Sendai 980-8577, Japan
b)Author to whom correspondence should be addressed: nitta@material.tohoku.ac.jp
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a)
Present address: Department of Materials Science, KAIST, Daejeon, South Korea.
b)Author to whom correspondence should be addressed: nitta@material.tohoku.ac.jp
Appl. Phys. Lett. 115, 162403 (2019)
Article history
Received:
July 24 2019
Accepted:
September 18 2019
Citation
Keita Nakagawara, Shinya Kasai, Jeongchun Ryu, Seiji Mitani, Luqiao Liu, Makoto Kohda, Junsaku Nitta; Temperature-dependent spin Hall effect tunneling spectroscopy in platinum. Appl. Phys. Lett. 14 October 2019; 115 (16): 162403. https://doi.org/10.1063/1.5121165
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