Massless fermions in multilayer graphitic systems with misoriented layers: Ab initio calculations and experimental fingerprints
Massless fermions in multilayer graphitic systems with misoriented layers: Ab initio calculations and experimental fingerprints
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DOI：
10.1103/physrevb.76.201402
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发表时间：
2007-11-01
影响因子：
3.7
通讯作者：
Henrard, Luc
中科院分区：
文献类型：
--
作者：
Latil, Sylvain;Meunier, Vincent;Henrard, Luc
我们研究了几个堆叠的石墨烯层的取向不良如何影响碳纳米系统的电子结构。我们提出了双层和三层系统的从头计算，以证明单层石墨烯的典型的无质量费米子行为也被发现在无公度多层石墨系统。我们还研究了实验指纹，如拉曼光谱和扫描隧道显微镜（STM）的这一属性的后果。我们的模拟表明，乱层少层石墨的STM图像是敏感的层的安排。我们还预测，石墨样品的共振拉曼信号是更敏感的层的取向比他们的数量。
We examine how the misorientation of a few stacked graphene layers affects the electronic structure of carbon nanosystems. We present ab initio calculations on bilayer and trilayer systems to demonstrate that the massless fermion behavior typical of single-layered graphene is also found in incommensurate multilayered graphitic systems. We also investigate the consequences of this property on experimental fingerprints, such as Raman spectroscopy and scanning tunneling microscopy (STM). Our simulations reveal that STM images of turbostratic few-layer graphite are sensitive to the layer arrangement. We also predict that the resonant Raman signals of graphitic samples are more sensitive to the orientation of the layers than to their number.