Evidence for nonplanar atomic arrangement in graphite obtained by Raman spectroscopy
Evidence for nonplanar atomic arrangement in graphite obtained by Raman spectroscopy
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DOI：
10.1103/physrevb.66.104109
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发表时间：
2002-09
影响因子：
3.7
通讯作者：
Y. Kawashima;G. Katagiri
中科院分区：
文献类型：
--
作者：
Y. Kawashima;G. Katagiri
日本大津市东丽研究中心2002年7月15日收到；2002年9月30日发表！人们普遍认为石墨具有平面结构，其中A位和B位的原子在同一平面上，没有Definite证据。利用晶格动力学计算和双共振机制，根据观测到的拉曼离面模式和混合的平面内和平面外模式，证明了A和B原子在石墨烯层中具有不同的高度。石墨的晶体对称性是非平面的C
Toray Research Center, Inc., Otsu, Shiga 520-8567, Japan~Received 15 July 2002; published 30 September 2002!It has been generally believed that graphite has a planar structure where atoms in the A site and the B site liein the same plane without definite evidence. It is demonstrated thatA and B atoms have different heights in thegraphene layer on the basis of the observed Raman out-of-plane mode and mixed in-plane and out-of-planemodes by employing a lattice dynamic calculation and a double resonance mechanism. The crystal symmetryof graphite is a nonplanar C