Phonon dispersion of graphene revisited

被引：0
|
作者：
Rasmita Sahoo
Rashmi Ranjan Mishra
机构：
[1] Birla Institute of Technology and Science,Department of Physics
来源：
Journal of Experimental and Theoretical Physics | 2012年 / 114卷
关键词：
Graphene Sheet; Phonon Dispersion; Plane Mode; Neighbor Interaction; Dynamical Matrix;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The phonon dispersion of graphene is derived by using a simple mass spring model and considering up to the first, second, third, and fourth nearest-neighbor interactions. The results obtained from different nearest-neighbor interactions are compared and it is shown that the k2 dependence for the out-of-plane transverse acoustic mode obtained in other sophisticated methods as well as experiment occurs only after including the fourth nearest-neighbor interaction.
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收藏
页码：805 / 809
页数：4
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