Atomic structure of the 6H–SiC(0001) nanomesh

Chen, Wei; Xu, Hai; Liu, Lei; Gao, Xingyu; Qi, Dongchen; Peng, Guowen; Tan, Swee Ching; Feng, Yuanping; Loh, Kian Ping; Wee, Andrew Thye Shen

doi:10.1016/j.susc.2005.09.013

Cited by 188 publications

(193 citation statements)

References 46 publications

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“…The LEED pattern is quite similar between monolayer and bilayer graphene, and consists of basically three types of spots; (i) the (1×1) spot from the bulk SiC substrate (Si(1×1)), 15 (ii) the weak 6 √ 3×6 √ 3R30 • spot due to the buffer layer, [15][16][17] and (iii) the C(1×1) spot from the honeycomb atomic pattern of graphene. 15,17 We find that the intensity of the C(1×1) spot in bilayer graphene is stronger than that of monolayer counterpart.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Li-intercalated bilayer graphene

et al. 2011

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We have succeeded in fabricating Li-intercalated bilayer graphene on silicon carbide. The low-energy electron diffraction from Li-deposited bilayer graphene shows a sharp 3 × 3 R 30° pattern in contrast to Li-deposited monolayer graphene. This indicates that Li atoms are intercalated between two adjacent graphene layers and take the same well-ordered superstructure as in bulk C6Li. The angle-resolved photoemission spectroscopy has revealed that Li atoms are fully ionized and the π bands of graphene are systematically folded by the superstructure of intercalated Li atoms, producing a snowflake-like Fermi surface centered at the Γ point. The present result suggests a high potential of Li-intercalated bilayer graphene for application to a nano-scale Li-ion battery

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Section: Resultsmentioning

confidence: 99%

Fabrication of Li-intercalated bilayer graphene

et al. 2011

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“…Previous STM results showed that the 6R3 surface/carbon nanomesh did not always retain its "6 × 6" periodicity. The pore size of the honeycombs observed by STM can be changed from 20 Å to 30 Å, depending on the annealing temperature [76]. Hence, this surface can be described as a dynamic superstructure formed by the self-organization of surface carbon atoms at high temperatures.…”

Section: Nano Researchmentioning

confidence: 99%

“…tunneling microscopy (STM) [76,77], have also been carried out. However, the effect of SiC substrates on EG is still not well understood.…”

Section: Nano Researchmentioning

confidence: 99%

“…The structure of EG was confi rmed by in situ low energy electron diffraction (LEED), STM, and photoemission spectroscopy (PES) [76]. Since the characteristic STM images of carbon nanomesh and single layer graphene are quite different, the appearance of single layer EG can be detected by monitoring the phase evolution from carbon nanomesh to graphene by in situ STM during the thermal annealing of SiC [76,79]. However, the STM images for single layer and bilayer EG on SiC are very similar.…”

Section: Nano Researchmentioning

confidence: 99%

“…It is very hard to determine the layer thickness using this method. Instead, layer thickness for bilayer or thicker graphene sample has been measured by monitoring the attenuation of the bulk SiC related Si 2p PES signal (with a photon beam energy of 500 eV) under normal emission conditions [76]. Figure 13 shows the Raman spectra of single and two layer EG (grown on Si terminated SiC), MCG, bulk graphite, and the SiC substrate [55].…”

Section: Nano Researchmentioning

confidence: 99%

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Raman spectroscopy and imaging of graphene

et al. 2008

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Graphene has many unique properties that make it an ideal material for fundamental studies as well as for potential applications. Here we review recent results on the Raman spectroscopy and imaging of graphene. We show that Raman spectroscopy and imaging can be used as a quick and unambiguous method to determine the number of graphene layers. The strong Raman signal of single layer graphene compared to graphite is explained by an interference enhancement model. We have also studied the effect of substrates, the top layer deposition, the annealing process, as well as folding (stacking order) on the physical and electronic properties of graphene. Finally, Raman spectroscopy of epitaxial graphene grown on a SiC substrate is presented and strong compressive strain on epitaxial graphene is observed. The results presented here are highly relevant to the application of graphene in nano-electronic devices and help in developing a better understanding of the physical and electronic properties of graphene.

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Interaction and Manipulation of Bi Adatoms on Monolayer Epitaxial Graphene

Lin

Huang

et al. 2019

Handbook of Graphene

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Atomic structure of the 6H–SiC(0001) nanomesh

Cited by 188 publications

References 46 publications

Fabrication of Li-intercalated bilayer graphene

Fabrication of Li-intercalated bilayer graphene

Raman spectroscopy and imaging of graphene

Interaction and Manipulation of Bi Adatoms on Monolayer Epitaxial Graphene

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