Research Article


2013, 6(12): 887–896


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

Yu Zhang1, Yanfeng Zhang1 (), Donglin Ma2, Qingqing Ji2, Wei Fang3, Jianping Shi1, Teng Gao2, Mengxi Liu2, Yabo Gao2, Yubin Chen2, Limei Xu3, and Zhongfan Liu2 ()

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1 Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, 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

Keywords: KEYWORDS graphene, STM, manganese, intercalation, Rh(111)
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ABSTRACT 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).
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Mn atomic layers under inert covers of graphene and hexagonal boron nitride prepared on Rh(111). Nano Res. 2013, 6(12): 887–896

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