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DOI | 10.1038/s41467-019-10762-4 |
Anomalous Kondo resonance mediated by semiconducting graphene nanoribbons in a molecular heterostructure | |
Li, Yang1,2; Ngo, Anh T.3; DiLullo, Andrew1; Latt, Kyaw Zin1,2; Kersell, Heath1,2; Fisher, Brandon1; Zapol, Peter3; Ulloa, Sergio E.; Hla, Saw-Wai1,2 | |
2019-06-26 | |
发表期刊 | NATURE COMMUNICATIONS
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ISSN | 2041-1723 |
出版年 | 2017 |
卷号 | 8 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Kondo resonances in heterostructures formed by magnetic molecules on a metal require free host electrons to interact with the molecular spin and create delicate many-body states. Unlike graphene, semiconducting graphene nanoribbons do not have free electrons due to their large bandgaps, and thus they should electronically decouple molecules from the metal substrate. Here, we observe unusually well-defined Kondo resonances in magnetic molecules separated from a gold surface by graphene nanoribbons in vertically stacked heterostructures. Surprisingly, the strengths of Kondo resonances for the molecules on graphene nanoribbons appear nearly identical to those directly adsorbed on the top, bridge and threefold hollow sites of Au(111). This unexpectedly strong spin-coupling effect is further confirmed by density functional calculations that reveal no spin-electron interactions at this molecule-gold substrate separation if the graphene nanoribbons are absent. Our findings suggest graphene nanoribbons mediate effective spin coupling, opening a way for potential applications in spintronics. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000412999700014 |
WOS关键词 | MAGNETIC-ANISOTROPY ; SINGLE ; STATES ; ATOM ; GAP |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204429 |
专题 | 资源环境科学 |
作者单位 | 1.Argonne Natl Lab, Ctr Nanoscale Mat, Nanosci & Technol Div, Lemont, IL 60439 USA; 2.Ohio Univ, Nanoscale & Quantum Phenomena Inst, Dept Phys & Astron, Athens, OH 45701 USA; 3.Argonne Natl Lab, Mat Sci Div, Lemont, IL 60439 USA |
推荐引用方式 GB/T 7714 | Li, Yang,Ngo, Anh T.,DiLullo, Andrew,et al. Anomalous Kondo resonance mediated by semiconducting graphene nanoribbons in a molecular heterostructure[J]. NATURE COMMUNICATIONS,2019,8. |
APA | Li, Yang.,Ngo, Anh T..,DiLullo, Andrew.,Latt, Kyaw Zin.,Kersell, Heath.,...&Hla, Saw-Wai.(2019).Anomalous Kondo resonance mediated by semiconducting graphene nanoribbons in a molecular heterostructure.NATURE COMMUNICATIONS,8. |
MLA | Li, Yang,et al."Anomalous Kondo resonance mediated by semiconducting graphene nanoribbons in a molecular heterostructure".NATURE COMMUNICATIONS 8(2019). |
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