Temperature dependent spin transport properties of platinum inferred from spin Hall magnetoresistance measurements

Journal Article · Mon Jun 16 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4885086· OSTI ID:22299901

Meyer, Sibylle; Althammer, Matthias; Geprägs, Stephan; Opel, Matthias; Goennenwein, Sebastian T. B. ^[1]; Gross, Rudolf ^[1]

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1. Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching (Germany)

We study the temperature dependence of the spin Hall magnetoresistance (SMR) in yttrium iron garnet/platinum hybrid structures via magnetization orientation dependent magnetoresistance measurements. Our experiments show a decrease of the SMR magnitude with decreasing temperature. Using the sensitivity of the SMR to the spin transport properties of the normal metal, we interpret our data in terms of a decrease of the spin Hall angle in platinum from 0.11 at room temperature to 0.075 at 10 K, while the spin diffusion length and the spin mixing conductance of the ferrimagnetic insulator/normal metal interface remain almost constant.

• OSTI ID: 22299901
• Journal Information: Applied Physics Letters, Vol. 104, Issue 24; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DIFFUSION LENGTH
FERRITE GARNETS
HALL EFFECT
HYBRID SYSTEMS
INTERFACES
MAGNETIZATION
MAGNETORESISTANCE
PLATINUM
SENSITIVITY
SPIN
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0000-0013 K
YTTRIUM COMPOUNDS