期刊
PHYSICAL REVIEW LETTERS
卷 112, 期 19, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.112.197201
关键词
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资金
- Center for Emergent Materials at the Ohio State University
- NSF Materials Research Science and Engineering Center [DMR-0820414]
- U.S. Department of Energy [DE-FG02-03ER46054]
- Lake Shore Cryogenics Inc.
- NanoSystems Laboratory at the Ohio State University
- U.S. Department of Energy (DOE) [DE-FG02-03ER46054] Funding Source: U.S. Department of Energy (DOE)
We have investigated spin pumping from Y3Fe5O12 thin films into Cu, Ag, Ta, W, Pt, and Au with varying spin-orbit coupling strengths. From measurements of Gilbert damping enhancement and inverse spin Hall signals spanning 3 orders of magnitude, we determine the spin Hall angles and interfacial spin mixing conductances for the six metals. The spin Hall angles largely vary as Z(4) (Z: atomic number), corroborating the role of spin- orbit coupling. Amongst the four 5d metals, the variation of the spin Hall angle is dominated by the sensitivity of the d-orbital moment to the d-electron count, confirming theoretical predictions.
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