Interplay of Rashba effect and spin Hall effect in perpendicular Pt/Co/MgO magnetic multilayers

Yun Chi Zhao; Guang Yang; Bo Wen Dong; Shou Guo Wang; Chao Wang; Young Sun; Jing Yan Zhang; Guang Hua Yu

doi:10.1088/1674-1056/25/7/077501

Interplay of Rashba effect and spin Hall effect in perpendicular Pt/Co/MgO magnetic multilayers

Yun Chi Zhao
, Guang Yang
, Bo Wen Dong
, Shou Guo Wang^*
, Chao Wang
, Young Sun
, Jing Yan Zhang
, Guang Hua Yu

^*Corresponding author for this work

CAS - Institute of Physics
University of Science and Technology Beijing

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

6 Scopus citations

Abstract

The interplay of the Rashba effect and the spin Hall effect originating from current induced spin-orbit coupling was investigated in the as-deposited and annealed Pt/Co/MgO stacks with perpendicular magnetic anisotropy. The above two effects were analyzed based on Hall measurements under external magnetic fields longitudinal and vertical to dc current, respectively. The coercive field as a function of dc current in vertical mode with only the Rashba effect involved decreases due to thermal annealing. Meanwhile, spin orbit torques calculated from Hall resistance with only the spin Hall effect involved in the longitudinal mode decrease in the annealed sample. The experimental results prove that the bottom Pt/Co interface rather than the Co/MgO top one plays a more critical role in both Rashba effect and spin Hall effect.

Original language	English
Article number	077501
Journal	Chinese Physics B
Volume	25
Issue number	7
DOIs	https://doi.org/10.1088/1674-1056/25/7/077501
State	Published - Jul 2016
Externally published	Yes

Keywords

Rashba effect
perpendicular multilayers
spin Hall effect

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10.1088/1674-1056/25/7/077501

Cite this

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title = "Interplay of Rashba effect and spin Hall effect in perpendicular Pt/Co/MgO magnetic multilayers",

abstract = "The interplay of the Rashba effect and the spin Hall effect originating from current induced spin-orbit coupling was investigated in the as-deposited and annealed Pt/Co/MgO stacks with perpendicular magnetic anisotropy. The above two effects were analyzed based on Hall measurements under external magnetic fields longitudinal and vertical to dc current, respectively. The coercive field as a function of dc current in vertical mode with only the Rashba effect involved decreases due to thermal annealing. Meanwhile, spin orbit torques calculated from Hall resistance with only the spin Hall effect involved in the longitudinal mode decrease in the annealed sample. The experimental results prove that the bottom Pt/Co interface rather than the Co/MgO top one plays a more critical role in both Rashba effect and spin Hall effect.",

keywords = "Rashba effect, perpendicular multilayers, spin Hall effect",

author = "Zhao, \{Yun Chi\} and Guang Yang and Dong, \{Bo Wen\} and Wang, \{Shou Guo\} and Chao Wang and Young Sun and Zhang, \{Jing Yan\} and Yu, \{Guang Hua\}",

note = "Publisher Copyright: {\textcopyright} 2016 Chinese Physical Society and IOP Publishing Ltd.",

year = "2016",

month = jul,

doi = "10.1088/1674-1056/25/7/077501",

language = "英语",

volume = "25",

journal = "Chinese Physics B",

issn = "1674-1056",

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TY - JOUR

T1 - Interplay of Rashba effect and spin Hall effect in perpendicular Pt/Co/MgO magnetic multilayers

AU - Zhao, Yun Chi

AU - Yang, Guang

AU - Dong, Bo Wen

AU - Wang, Shou Guo

AU - Wang, Chao

AU - Sun, Young

AU - Zhang, Jing Yan

AU - Yu, Guang Hua

PY - 2016/7

Y1 - 2016/7

N2 - The interplay of the Rashba effect and the spin Hall effect originating from current induced spin-orbit coupling was investigated in the as-deposited and annealed Pt/Co/MgO stacks with perpendicular magnetic anisotropy. The above two effects were analyzed based on Hall measurements under external magnetic fields longitudinal and vertical to dc current, respectively. The coercive field as a function of dc current in vertical mode with only the Rashba effect involved decreases due to thermal annealing. Meanwhile, spin orbit torques calculated from Hall resistance with only the spin Hall effect involved in the longitudinal mode decrease in the annealed sample. The experimental results prove that the bottom Pt/Co interface rather than the Co/MgO top one plays a more critical role in both Rashba effect and spin Hall effect.

AB - The interplay of the Rashba effect and the spin Hall effect originating from current induced spin-orbit coupling was investigated in the as-deposited and annealed Pt/Co/MgO stacks with perpendicular magnetic anisotropy. The above two effects were analyzed based on Hall measurements under external magnetic fields longitudinal and vertical to dc current, respectively. The coercive field as a function of dc current in vertical mode with only the Rashba effect involved decreases due to thermal annealing. Meanwhile, spin orbit torques calculated from Hall resistance with only the spin Hall effect involved in the longitudinal mode decrease in the annealed sample. The experimental results prove that the bottom Pt/Co interface rather than the Co/MgO top one plays a more critical role in both Rashba effect and spin Hall effect.

KW - Rashba effect

KW - perpendicular multilayers

KW - spin Hall effect

UR - https://www.scopus.com/pages/publications/84978285300

U2 - 10.1088/1674-1056/25/7/077501

DO - 10.1088/1674-1056/25/7/077501

M3 - 文章

AN - SCOPUS:84978285300

SN - 1674-1056

VL - 25

JO - Chinese Physics B

JF - Chinese Physics B

IS - 7

M1 - 077501

ER -

Interplay of Rashba effect and spin Hall effect in perpendicular Pt/Co/MgO magnetic multilayers

Abstract

Keywords

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