arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0709.2858cond-mat.mtrl-sci
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在Ru(0001)表面生长的毫米级高度有序单晶石墨烯

Millimeter-Scale, Highly Ordered Single Crystalline Graphene Grown on Ru (0001) Surface

Y. Pan, N. Jiang, J. T. Sun, D. X. Shi, S. X. Du, Feng Liu, H. -J. Gao

摘要:

我们展示了一种通过热退火含碳钌单晶来合成大规模单层石墨烯的方法。低能电子衍射表明石墨烯生长到毫米级尺寸,具有良好的长程序有序性,扫描隧道显微镜显示出完美的结晶性。用第一性原理计算增强的莫尔图案的分析显示石墨烯层与下面的Ru(0001)表面不相称,形成具有~+0.81%的平均晶格应变的N乘N超晶格。我们的研究结果为生产高质量的单晶石墨烯基础研究和大规模石墨烯晶片的设备制造和集成提供了一种有效的方法。

英文摘要:

We demonstrate a method for synthesizing large scale single layer graphene by thermal annealing of ruthenium single crystal containing carbon. Low energy electron diffraction indicates the graphene grows to as large as millimeter dimensions with good long-range order, and scanning tunneling microscope shows perfect crystallinity. Analysis of Moire pattern augmented with first-principles calculations shows the graphene layer is incommensurate with the underlying Ru(0001) surface forming a N by N superlattice with an average lattice strain of ~ +0.81%. Our findings offer an effective method for producing high quality single crystalline graphene for fundamental research and large-scale graphene wafer for device fabrication and integration.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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