Temperature-dependent spin Hall effect tunneling spectroscopy in platinum

Keita Nakagawara; Shinya Kasai; Jeongchun Ryu; Seiji Mitani; Luqiao Liu; Makoto Kohda; Junsaku Nitta

doi:10.1063/1.5121165

Temperature-dependent spin Hall effect tunneling spectroscopy in platinum

Keita Nakagawara, Shinya Kasai, Jeongchun Ryu, Seiji Mitani, Luqiao Liu, Makoto Kohda, Junsaku Nitta

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

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.

Original language	English
Journal	Applied Physics Letters
Volume	115
Issue number	16
DOIs	https://doi.org/10.1063/1.5121165
Publication status	Published - 2019 Oct 14

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title = "Temperature-dependent spin Hall effect tunneling spectroscopy in platinum",

abstract = "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.",

author = "Keita Nakagawara and Shinya Kasai and Jeongchun Ryu and Seiji Mitani and Luqiao Liu and Makoto Kohda and Junsaku Nitta",

note = "Funding Information: 15H05699, 15H05854, and 15H02099) and JSPS Core-to-Core program. The present work was supported through the Program for Leading Graduate Schools, “Interdepartmental Doctoral Degree Program for Multi-dimensional Materials Science Leaders” by MEXT. Publisher Copyright: {\textcopyright} 2019 Author(s).",

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T1 - Temperature-dependent spin Hall effect tunneling spectroscopy in platinum

AU - Nakagawara, Keita

AU - Kasai, Shinya

AU - Ryu, Jeongchun

AU - Mitani, Seiji

AU - Liu, Luqiao

AU - Kohda, Makoto

AU - Nitta, Junsaku

N1 - Funding Information: 15H05699, 15H05854, and 15H02099) and JSPS Core-to-Core program. The present work was supported through the Program for Leading Graduate Schools, “Interdepartmental Doctoral Degree Program for Multi-dimensional Materials Science Leaders” by MEXT. Publisher Copyright: © 2019 Author(s).

PY - 2019/10/14

Y1 - 2019/10/14

N2 - 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.

AB - 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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JF - Applied Physics Letters

IS - 16

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Temperature-dependent spin Hall effect tunneling spectroscopy in platinum

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