Formation of ion irradiation induced small-scale defects on graphite surfaces

被引:296
作者
Nordlund, K [1 ]
Keinonen, J [1 ]
Mattila, T [1 ]
机构
[1] HELSINKI UNIV TECHNOL,PHYS LAB,FIN-02150 ESPOO,FINLAND
关键词
D O I
10.1103/PhysRevLett.77.699
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We use molecular dynamics simulations and ab initio calculations to study the structures and formation probabilities of isolated surface defects produced by ion irradiation of (1000) graphite. We improve the conventionally used Tersoff potential [J. Tersoff, Phys. Rev. Lett. 61, 2879 (1988)] to realistically describe interlayer forces in graphite and high-energy processes in carbon. We identify three defect structures which correspond to experimentally observed hillocks on graphite surfaces, and examine their formation at different implantation energies.
引用
收藏
页码:699 / 702
页数:4
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