Journal
PHYSICAL REVIEW LETTERS
Volume 107, Issue 14, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.146602
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Funding
- U.S. National Science Foundation [ECCS-0725386, DMR-0906489, ECCS-1001815, DMR-1015175]
- U.S. National Institute of Standards and Technology
- U.S. Army TARDEC RDECOM
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [906489] Funding Source: National Science Foundation
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Control of spin waves in a ferrite thin film via interfacial spin scattering was demonstrated. The experiments used a 4.6 mu m-thick yttrium iron garnet (YIG) film strip with a 20-nm thick Pt capping layer. A dc current pulse was applied to the Pt layer and produced a spin current across the Pt thickness. As the spin current scatters off the YIG surface, it can either amplify or attenuate spin-wave pulses that travel in the YIG strip, depending on the current or field configuration. The spin scattering also affects the saturation behavior of high-power spin waves.
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