Influence of the magnetic proximity effect on spin-orbit torque efficiencies in ferromagnet/platinum bilayers

T. A. Peterson; A. P. McFadden; C. J. Palmstrøm; P. A. Crowell

doi:10.1103/PhysRevB.97.020403

Influence of the magnetic proximity effect on spin-orbit torque efficiencies in ferromagnet/platinum bilayers

T. A. Peterson, A. P. McFadden, C. J. Palmstrøm, P. A. Crowell

Physics and Astronomy (Twin Cities)

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

24 Scopus citations

Abstract

Current-induced spin-orbit torques in Co2FeAl/Pt ultrathin bilayers are studied using a magnetoresistive harmonic response technique, which distinguishes the dampinglike and fieldlike contributions. The presence of a temperature-dependent magnetic proximity effect is observed through the anomalous Hall and anisotropic magnetoresistances, which are enhanced at low temperatures for thin platinum thicknesses. The fieldlike torque efficiency decreases steadily as the temperature is lowered for all Pt thicknesses studied, which we propose is related to the influence of the magnetic proximity effect on the fieldlike torque mechanism.

Original language	English (US)
Article number	020403
Journal	Physical Review B
Volume	97
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevB.97.020403
State	Published - Jan 10 2018

Bibliographical note

Publisher Copyright:
© 2018 American Physical Society.

Access

10.1103/PhysRevB.97.020403

OpenUrl availability

Full text

Cite this

@article{e6bf8c88aa5346e1a4031f152447d1fb,

title = "Influence of the magnetic proximity effect on spin-orbit torque efficiencies in ferromagnet/platinum bilayers",

abstract = "Current-induced spin-orbit torques in Co2FeAl/Pt ultrathin bilayers are studied using a magnetoresistive harmonic response technique, which distinguishes the dampinglike and fieldlike contributions. The presence of a temperature-dependent magnetic proximity effect is observed through the anomalous Hall and anisotropic magnetoresistances, which are enhanced at low temperatures for thin platinum thicknesses. The fieldlike torque efficiency decreases steadily as the temperature is lowered for all Pt thicknesses studied, which we propose is related to the influence of the magnetic proximity effect on the fieldlike torque mechanism.",

author = "Peterson, {T. A.} and McFadden, {A. P.} and Palmstr{\o}m, {C. J.} and Crowell, {P. A.}",

note = "Publisher Copyright: {\textcopyright} 2018 American Physical Society.",

year = "2018",

month = jan,

day = "10",

doi = "10.1103/PhysRevB.97.020403",

language = "English (US)",

volume = "97",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

number = "2",

}

TY - JOUR

T1 - Influence of the magnetic proximity effect on spin-orbit torque efficiencies in ferromagnet/platinum bilayers

AU - Peterson, T. A.

AU - McFadden, A. P.

AU - Palmstrøm, C. J.

AU - Crowell, P. A.

PY - 2018/1/10

Y1 - 2018/1/10

N2 - Current-induced spin-orbit torques in Co2FeAl/Pt ultrathin bilayers are studied using a magnetoresistive harmonic response technique, which distinguishes the dampinglike and fieldlike contributions. The presence of a temperature-dependent magnetic proximity effect is observed through the anomalous Hall and anisotropic magnetoresistances, which are enhanced at low temperatures for thin platinum thicknesses. The fieldlike torque efficiency decreases steadily as the temperature is lowered for all Pt thicknesses studied, which we propose is related to the influence of the magnetic proximity effect on the fieldlike torque mechanism.

AB - Current-induced spin-orbit torques in Co2FeAl/Pt ultrathin bilayers are studied using a magnetoresistive harmonic response technique, which distinguishes the dampinglike and fieldlike contributions. The presence of a temperature-dependent magnetic proximity effect is observed through the anomalous Hall and anisotropic magnetoresistances, which are enhanced at low temperatures for thin platinum thicknesses. The fieldlike torque efficiency decreases steadily as the temperature is lowered for all Pt thicknesses studied, which we propose is related to the influence of the magnetic proximity effect on the fieldlike torque mechanism.

UR - http://www.scopus.com/inward/record.url?scp=85044676060&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85044676060&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.97.020403

DO - 10.1103/PhysRevB.97.020403

M3 - Article

AN - SCOPUS:85044676060

SN - 2469-9950

VL - 97

JO - Physical Review B

JF - Physical Review B

IS - 2

M1 - 020403

ER -

Influence of the magnetic proximity effect on spin-orbit torque efficiencies in ferromagnet/platinum bilayers

Abstract

Bibliographical note

Access

OpenUrl availability

Other files and links

Fingerprint

Cite this