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Mn atomic layers under inert covers of graphene and hexagonal boron nitride prepared on Rh(111)

ISSN号：1998-0124
期刊名称：Nano Research
时间：2013.8.8
页码：887-896
分类：TN405.982[电子电信—微电子学与固体电子学] O613.81[理学—无机化学;理学—化学]
作者机构：[1]Department of Materials Science and Engineering, College of Engineering, Peking University, Bei]ing 10087 1, China, [2]Center for Nanochemistry (CNC), Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China, [3]International Center for Quantum Materials, Peking University, Beijing 100871, China
相关基金：This work was financially supported by the National Natural Science Foundation of China （Grant Nos. 51222201, 51290272, 51121091, and 21073003）, and the Ministry of Science and Technology of China （Grant Nos. 2012CB921404, 2011CB921903, 2011CB933003, and 2012CB933404）.
相关项目：石墨烯的偏析生长与能带调控

作者： Yu Zhang, Yanfeng Zhang*, Donglin Ma, Qingqing Ji|Zhongfan Liu*|

关键词：六方氮化硼, 原子层, 石墨, 锰簇, 惰性, 扫描隧道显微镜, 制备, RH, graphene,STM,manganese,intercalation,Rh（111）

中文摘要：

进 graphene 和它的支持的底层的接口的金属原子的置闰为削弱联合并且构造金属的接口的缘故成为了一个吸引人的话题在惰性的封面下面的原子层。然而，这新奇行为很少在类似的六角形的硼氮化物(h-BN ) 上被报导了在金属底层上综合了。这里，我们描述 Mn 置闰的比较研究进 graphene/Rh (111 ) 和 h-BN/Rh (111 ) 的接口，由使用解决 atomically 的扫描通道显微镜学(STM ) 和密度功能的理论(DFT ) 计算。置闰被退火执行同样扔的 Mn 簇，和进 h-BN/Rh (111 ) 的 Mn 置闰的开始的温度被发现是 80 瑩 ?? 数歡瀠睯牥搠湥楳祴漠 ??? ″坭洯吗？

英文摘要：

Intercalation of metal atoms into the interface of graphene and its supporting substrate has become an intriguing topic for the sake of weakening the interface coupling and constructing metal atomic layers under inert covers. However, this novel behavior has rarely been reported on the analogous hexagonal boron nitride （h-BN） synthesized on metal substrates. Here, we describe a comparative study of Mn intercalation into the interfaces of graphene/Rh（111） and h-BN/Rh（111）, by using atomically-resolved scanning tunneling microscopy （STM） and density functional theory （DFT） calculations. The intercalation was performed by annealing as-deposited Mn clusters, and the starting temperature of Mn intercalation into h-BN/Rh（111） was found to be ~80 ~C higher than that for graphene/Rh（111）. Moreover, the intercalated islands of h-BN/Mn/Rh（111） usually possess more irregular shapes than those of graphene/Mn/Rh（111）, as illustrated by temperature-dependent STM observations. All these experimental facts suggest a stronger interaction of Mn with h-BN/Rh（111） than that with graphene/Rh（111）.