Spin engineering: Direct determination of the Ruderman-Kittel-Kasuya-Yosida far-field range function in ruthenium
- IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California (USA)
- IBM Storage Systems Products Division, 5600 Cottle Road, San Jose, California (USA)
Oscillations in both {ital ferromagnetic} and antiferromagnetic indirect exchange coupling through Ru are directly measured. Ferromagnetic coupling is determined by {ital spin} {ital engineering} multilayered structures comprised of trilayers of Ni{sub 80}Co{sub 20}/Ru/Ni{sub 80}Co{sub 20} in which one of the Ni{sub 80}Co{sub 20} layers is strongly antiferromagnetically pinned to a Co layer. Oscillations in antiferromagnetic exchange coupling are measured in companion Ni{sub 80}Cu{sub 20}/Ru multilayers. The dependence of the exchange coupling strength on Ru thickness is well described by the Ruderman-Kittel-Kasuya-Yosida far-field range function, providing a direct measurement of this function through a transition metal.
- OSTI ID:
- 5173385
- Journal Information:
- Physical Review, B: Condensed Matter; (United States), Vol. 44:13; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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