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Quantitative study of spin relaxation in rubrene thin films by inverse spin Hall effect
Z.H.Li; T.Li; D.C.Qi; W.Tong; L.Q.Xu; J.Zhu; Z.T.Zhang
2019
发表期刊Applied Physics Letters
ISSN0003-6951
卷号115期号:5页码:5
摘要Spin relaxation properties of pi-conjugated organic semiconductors are key indicators of the performance of organic spintronic devices. However, reliable determination of spin relaxation parameters in organic materials is hindered by complex interfacial phenomena at organic/ferromagnetic metal interfaces that couple spin injection with charge injection. Here, we study the spin pumping induced pure spin transport in Permalloy/rubrene/Pt trilayers and determine the spin diffusion length lambda(s) = 132 +/- 9nm and the spin relaxation time tau(s) = 3.8 +/- 0.5ms in rubrene films at room temperature by using the inverse spin Hall effect. The determined spin diffusion length lambda(s) is found to be almost two times larger than that of similar to 46.3nm at 100K extracted from rubrene spin valve devices in which charge carrier injection/detection occurs at organic/ferromagnetic metal interfaces. Our results demonstrate experimentally that the efficiency and the rate of spin polarized charge transport through the organic/ferromagnetic metal interface play a dominant role in determining the spin relaxation process of spin valve devices in which charge and spin currents are coupled.
关键词magnetoresistance,diffusion,transport,injection,Physics
DOI10.1063/1.5108561
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收录类别SCI ; EI
语种英语
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文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/63226
专题中国科学院长春光学精密机械与物理研究所
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Z.H.Li,T.Li,D.C.Qi,et al. Quantitative study of spin relaxation in rubrene thin films by inverse spin Hall effect[J]. Applied Physics Letters,2019,115(5):5.
APA Z.H.Li.,T.Li.,D.C.Qi.,W.Tong.,L.Q.Xu.,...&Z.T.Zhang.(2019).Quantitative study of spin relaxation in rubrene thin films by inverse spin Hall effect.Applied Physics Letters,115(5),5.
MLA Z.H.Li,et al."Quantitative study of spin relaxation in rubrene thin films by inverse spin Hall effect".Applied Physics Letters 115.5(2019):5.
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