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Strongly extended diffusion length for the nonequilibrium magnons in Y3Fe5O12 by photoexcitation
Wang, S. H.1; Li, G.2,3; Guo, E. J.4; Zhao, Y.1; Wang, J. Y.1; Zou, L. K.5; Yan, H.1; Cai, J. W.2,3; Zhang, Z. T.1; Wang, M.1; Tian, Y. Y.1; Zheng, X. L.2,3; Sun, J. R.2,3; Jin, K. X.1
2018-05-09
Source PublicationPHYSICAL REVIEW MATERIALS
ISSN2475-9953
Volume2Issue:5Pages:6
Abstract

Y3Fe5O12 (YIG) is known for its long magnon diffusion length. Although it has the known lowest damping rate, an even longer diffusion distance is still highly desired since it may lead to a much more efficient information transmission and processing. While most of previous works focused on the generation and detection of magnons in YIG, here we demonstrate how to depress the damping rate during the diffusion of magnon. By selectively exciting the spin state transition of the Fe ions in YIG, we successfully increase magnon diffusion length by one order of magnitude, i.e., from the previous reported similar to 10 mu m up to similar to 156 mu m (for the sample prepared by liquid phase epitaxy) and similar to 180 gm (for the sample prepared by pulsed laser deposition) at room temperature. The diffusion length, determined by nonlocal geometry, is similar to 30 mu m for the magnons induced by visible light and above 150 mu m for the laser of 980 nm. In addition to thermal gradient, light excitation affects the electron configuration of the Fe3+ ion in YIG. Long-wavelength laser is more effective since it causes a transition of the Fe3+ ions in FeO6 octahedron from a high spin to a low spin state and thus causes a magnon softening which favors a long-distance diffusion. The present work paves the way toward an efficient tuning of magnon transport which is crucially important for magnon spintromcs.

DOI10.1103/PhysRevMaterials.2.051401
WOS KeywordSPIN ; TEMPERATURES ; TRANSPORT ; TANTALUM
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[11604265] ; National Natural Science Foundation of China[51402240] ; National Natural Science Foundation of China[11520101002] ; National Natural Science Foundation of China[51572222] ; Fundamental Research Funds for the Central Universities[3102017jc01001] ; National Basic Research of China[2016YFA0300701] ; Key Program of the Chinese Academy of Sciences
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000433007200001
PublisherAMER PHYSICAL SOC
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/37116
Collection中科院强磁场科学中心
Corresponding AuthorSun, J. R.; Jin, K. X.
Affiliation1.Northwestern Polytech Univ, Sch Sci, Shanxi Key Lab Condensed Matter Struct & Properti, Xian 710072, Shaanxi, Peoples R China
2.Chinese Acad Sci, Beijing Natl Lab Condensed Matter, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
4.Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN 37831 USA
5.Chinese Acad Sci, High Magnet Field Lab, Hefei 230031, Anhui, Peoples R China
Recommended Citation
GB/T 7714
Wang, S. H.,Li, G.,Guo, E. J.,et al. Strongly extended diffusion length for the nonequilibrium magnons in Y3Fe5O12 by photoexcitation[J]. PHYSICAL REVIEW MATERIALS,2018,2(5):6.
APA Wang, S. H..,Li, G..,Guo, E. J..,Zhao, Y..,Wang, J. Y..,...&Jin, K. X..(2018).Strongly extended diffusion length for the nonequilibrium magnons in Y3Fe5O12 by photoexcitation.PHYSICAL REVIEW MATERIALS,2(5),6.
MLA Wang, S. H.,et al."Strongly extended diffusion length for the nonequilibrium magnons in Y3Fe5O12 by photoexcitation".PHYSICAL REVIEW MATERIALS 2.5(2018):6.
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