Temperature dependence of spin-orbit torques in Cu-Au alloys

Yan Wen; Jun Wu; Peng Li; Qiang Zhang; Yuelei Zhao; Aurelien Manchon; John Q. Xiao; Xixiang Zhang

doi:10.1103/PhysRevB.95.104403

Temperature dependence of spin-orbit torques in Cu-Au alloys

Yan Wen, Jun Wu, Peng Li, Qiang Zhang, Yuelei Zhao, Aurelien Manchon, John Q. Xiao, Xixiang Zhang

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

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Abstract

We investigated current driven spin-orbit torques in Cu40Au60/Ni80Fe20/Ti layered structures with in-plane magnetization. We have demonstrated a reliable and convenient method to separate dampinglike torque and fieldlike torque by using the second harmonic technique. It is found that the dampinglike torque and fieldlike torque depend on temperature very differently. Dampinglike torque increases with temperature, while fieldlike torque decreases with temperature, which are different from results obtained previously in other material systems. We observed a nearly linear dependence between the spin Hall angle and longitudinal resistivity, suggesting that skew scattering may be the dominant mechanism of spin-orbit torques.

Original language	English (US)
Journal	Physical Review B
Volume	95
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevB.95.104403
State	Published - Mar 6 2017

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST) under Grant No. CRF 2015 2626 CRG4. The work at the University of Delaware was supported by the US National Science Foundation under Division of Materials Research Grant No. 1505192.

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10.1103/PhysRevB.95.104403

https://repository.kaust.edu.sa/bitstream/10754/623113/1/PhysRevB.95.104403.pdf

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title = "Temperature dependence of spin-orbit torques in Cu-Au alloys",

abstract = "We investigated current driven spin-orbit torques in Cu40Au60/Ni80Fe20/Ti layered structures with in-plane magnetization. We have demonstrated a reliable and convenient method to separate dampinglike torque and fieldlike torque by using the second harmonic technique. It is found that the dampinglike torque and fieldlike torque depend on temperature very differently. Dampinglike torque increases with temperature, while fieldlike torque decreases with temperature, which are different from results obtained previously in other material systems. We observed a nearly linear dependence between the spin Hall angle and longitudinal resistivity, suggesting that skew scattering may be the dominant mechanism of spin-orbit torques.",

author = "Yan Wen and Jun Wu and Peng Li and Qiang Zhang and Yuelei Zhao and Aurelien Manchon and Xiao, {John Q.} and Xixiang Zhang",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST) under Grant No. CRF 2015 2626 CRG4. The work at the University of Delaware was supported by the US National Science Foundation under Division of Materials Research Grant No. 1505192.",

year = "2017",

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doi = "10.1103/PhysRevB.95.104403",

language = "English (US)",

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AU - Wen, Yan

AU - Wu, Jun

AU - Li, Peng

AU - Zhang, Qiang

AU - Zhao, Yuelei

AU - Manchon, Aurelien

AU - Xiao, John Q.

AU - Zhang, Xixiang

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST) under Grant No. CRF 2015 2626 CRG4. The work at the University of Delaware was supported by the US National Science Foundation under Division of Materials Research Grant No. 1505192.

PY - 2017/3/6

Y1 - 2017/3/6

N2 - We investigated current driven spin-orbit torques in Cu40Au60/Ni80Fe20/Ti layered structures with in-plane magnetization. We have demonstrated a reliable and convenient method to separate dampinglike torque and fieldlike torque by using the second harmonic technique. It is found that the dampinglike torque and fieldlike torque depend on temperature very differently. Dampinglike torque increases with temperature, while fieldlike torque decreases with temperature, which are different from results obtained previously in other material systems. We observed a nearly linear dependence between the spin Hall angle and longitudinal resistivity, suggesting that skew scattering may be the dominant mechanism of spin-orbit torques.

AB - We investigated current driven spin-orbit torques in Cu40Au60/Ni80Fe20/Ti layered structures with in-plane magnetization. We have demonstrated a reliable and convenient method to separate dampinglike torque and fieldlike torque by using the second harmonic technique. It is found that the dampinglike torque and fieldlike torque depend on temperature very differently. Dampinglike torque increases with temperature, while fieldlike torque decreases with temperature, which are different from results obtained previously in other material systems. We observed a nearly linear dependence between the spin Hall angle and longitudinal resistivity, suggesting that skew scattering may be the dominant mechanism of spin-orbit torques.

UR - http://hdl.handle.net/10754/623113

UR - http://journals.aps.org/prb/abstract/10.1103/PhysRevB.95.104403

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M3 - Article

SN - 2469-9950

VL - 95

JO - Physical Review B

JF - Physical Review B

IS - 10

ER -

Temperature dependence of spin-orbit torques in Cu-Au alloys

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