Graphene as an electronic membrane

被引：282

作者：

Kim, Eun-Ah ^{[1
,2
]}

Castro Neto, A. H. ^{[3
]}

机构：

[1] Stanford Univ, Stanford Inst Theoret Phys, Stanford, CA 94305 USA

[2] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[3] Boston Univ, Dept Phys, Boston, MA 02215 USA

来源：

EPL | 2008年 / 84卷 / 05期

关键词：

D O I：

10.1209/0295-5075/84/57007

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the membrane aspect of graphene and its impact on the electronic properties. We show that rippling generates spatially varying electrochemical potential that is proportional to the square of the local curvature. This is due to the rehybridization effects and the change in the next-neighbor hopping caused by curvature. We estimate the electrochemical-potential variation associated with the rippling observed in recent scanning tunneling microscopy (STM) to be of order 30 meV. Further we show that the charge inhomogeneity in turn stabilizes ripple formation. Copyright (C) EPLA, 2008

引用

页数：5

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