期刊
PHYSICAL REVIEW LETTERS
卷 111, 期 10, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.111.106601
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资金
- U.S. National Science Foundation [ECCS-1231598]
- U.S. Army Research Office [W911NF-12-1-0518, W911NF-11-C-0075]
- U.S. National Institute of Standards and Technology [60NANB10D011]
- U.S. Department of Energy, Office of Basic Energy Sciences [DE-AC02-06CH11357]
- Natural Sciences and Engineering Research Council of Canada
- Canadian Institute for Advanced Research
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [906489] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1231598] Funding Source: National Science Foundation
Strong damping enhancement in nm-thick yttrium iron garnet (YIG) films due to Pt capping layers was observed. This damping is substantially larger than the expected damping due to conventional spin pumping, is accompanied by a shift in the ferromagnetic resonance field, and can be suppressed by the use of a Cu spacer in between the YIG and Pt films. The data indicate that such damping may originate from the ferromagnetic ordering in Pt atomic layers near the YIG/Pt interface and the dynamic exchange coupling between the ordered Pt spins and the spins in the YIG film.
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