Dislocations in graphene

被引：81

作者：

Carpio, Ana ^{[2
]}

Bonilla, Luis L. ^{[1
]}

de Juan, Fernando ^{[3
]}

Vozmediano, Maria A. H. ^{[3
]}

机构：

[1] Univ Carlos III Madrid, G Millan Inst Fluid Dynam Nanosci & Ind Math, Leganes 28911, Spain

[2] Univ Complutense Madrid, Dept Matemat Aplicada, E-28040 Madrid, Spain

[3] CSIC, Inst Ciencia Mat, Unidad Asociada, ICMM UC3M, E-28049 Madrid, Spain

来源：

NEW JOURNAL OF PHYSICS | 2008年 / 10卷

关键词：

D O I：

10.1088/1367-2630/10/5/053021

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the stability and evolution of various elastic defects in a flat graphene sheet and the electronic properties of the most stable configurations. Two types of dislocations are found to be stable: 'glide' dislocations consisting of heptagon-pentagon pairs, and 'shuffle' dislocations, an octagon with a dangling bond. Unlike the most studied case of carbon nanotubes, Stone Wales defects seem to be dynamically unstable in the planar graphene sheet. Similar defects in which one of the pentagon-heptagon pairs is displaced vertically with respect to the other one are found to be dynamically stable. Shuffle dislocations will give rise to local magnetic moments that can provide an alternative route to magnetism in graphene.

引用

页数：13

共 43 条

[1] Surface reconstructions and dimensional changes in single-walled carbon nanotubes [J].

Ajayan, PM ;

Ravikumar, V ;

Charlier, JC .

PHYSICAL REVIEW LETTERS, 1998, 81 (07) :1437-1440

[2]

ANOKHIN AO, 1994, JETP LETT+, V59, P369

[3] Experimental evidence for two-dimensional magnetic order in proton bombarded graphite [J].

Barzola-Quiquia, J. ;

Esquinazi, P. ;

Rothermel, M. ;

Spemann, D. ;

Butz, T. ;

Garcia, N. .

PHYSICAL REVIEW B, 2007, 76 (16)

[4] ELASTIC CONSTANTS OF COMPRESSION-ANNEALED PYROLYTIC GRAPHITE [J].

BLAKSLEE, OL .

JOURNAL OF APPLIED PHYSICS, 1970, 41 (08) :3373-+

[5]

BOLOTIN KI, 2008, PREPRINT

[6] Dislocations in cubic crystals described by discrete models [J].

Bonilla, L. L. ;

Carpio, A. ;

Plans, I. .

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, 2007, 376 :361-377

[7] Discrete models of dislocations and their motion in cubic crystals [J].

Carpio, A ;

Bonilla, LL .

PHYSICAL REVIEW B, 2005, 71 (13)

[8] Edge dislocations in crystal structures considered as traveling waves in discrete models [J].

Carpio, A ;

Bonilla, LL .

PHYSICAL REVIEW LETTERS, 2003, 90 (13) :4

[9]

CARPIO A, 2008, UNPUB

[10] The electronic properties of graphene [J].

Castro Neto, A. H. ;

Guinea, F. ;

Peres, N. M. R. ;

Novoselov, K. S. ;

Geim, A. K. .

REVIEWS OF MODERN PHYSICS, 2009, 81 (01) :109-162

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