Polarization of supported graphene by slowly moving charges

被引：26

作者：

Radovic, I. ^{[1
]}

Hadzievski, Lj. ^{[1
]}

Miskovic, Z. L. ^{[2
]}

机构：

[1] Inst Nucl Sci, VINCA, Belgrade 11001, Serbia

[2] Univ Waterloo, Dept Appl Math, Waterloo, ON N2L 3G1, Canada

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.77.075428

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We describe the dynamic polarization of graphene's pi electrons by means of the Vlasov equations in the relaxation-time approximation and evaluate the stopping and the image forces on slow ions moving parallel to a supported graphene under the gating conditions. While the effects of temperature and the gate potential on these forces are conveniently included by means of a single scaling parameter, the effects of variation in size of the gap between graphene and the SiO2 substrate are found to be quite large, pointing to the need for including this gap explicitly in modeling of polarization of graphene.

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页数：9

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