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

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.
Authors:
; ; ; ;  [1] ;  [1] ;  [2]
  1. Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching (Germany)
  2. (Germany)
Publication Date:
OSTI Identifier:
22299901
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 24; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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