Exchange-induced charge inhomogeneities in rippled neutral graphene

被引：46

作者：

Brey, L. ^{[1
]}

Palacios, J. J. ^{[1
,2
]}

机构：

[1] CSIC, Inst Ciencia Mat Madrid, Canto Blanco 28049, Spain

[2] Univ Alicante, Dept Fis Aplicada, E-03690 Alicante, Spain

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.77.041403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A mechanism that induces charge density variations in corrugated graphene is proposed. Here it is shown how the interplay between lattice deformations and exchange interactions can induce charge separation, i.e., puddles of electrons and holes, for realistic deformation values of the graphene sheet. The induced charge density lies in the range of 10(11) - 10(12) cm(-2), which is compatible with recent measurements.

引用

页数：4

共 23 条

[1] Chirality and correlations in graphene [J].

Barlas, Yafis ;

Pereg-Barnea, T. ;

Polini, Marco ;

Asgari, Reza ;

MacDonald, A. H. .

PHYSICAL REVIEW LETTERS, 2007, 98 (23)

[2] Elementary electronic excitations in graphene nanoribbons [J].

Brey, L. ;

Fertig, H. A. .

PHYSICAL REVIEW B, 2007, 75 (12)

[3] Charge inhomogeneities due to smooth ripples in graphene sheets [J].

de Juan, Fernando ;

Cortijo, Alberto ;

Vozmediano, Maria A. H. .

PHYSICAL REVIEW B, 2007, 76 (16)

[4]

FASOLINO A, ARXIV07041793

[5] Marginal-Fermi-liquid behavior from two-dimensional Coulomb interaction [J].

González, J ;

Guinea, F ;

Vozmediano, MAH .

PHYSICAL REVIEW B, 1999, 59 (04) :R2474-R2477

[6]

GUINEA F, ARXIV07070682

[7] Density dependent exchange contribution to partial derivativeμ/partial derivativen and compressibility in graphene [J].

Hwang, E. H. ;

Hu, Ben Yu-Kuang ;

Das Sarma, S. .

PHYSICAL REVIEW LETTERS, 2007, 99 (22)

[8] Carrier transport in two-dimensional graphene layers [J].

Hwang, E. H. ;

Adam, S. ;

Das Sarma, S. .

PHYSICAL REVIEW LETTERS, 2007, 98 (18)

[9] Atomic structure of graphene on SiO2 [J].

Ishigami, Masa ;

Chen, J. H. ;

Cullen, W. G. ;

Fuhrer, M. S. ;

Williams, E. D. .

NANO LETTERS, 2007, 7 (06) :1643-1648

[10]

Landau L., 1980, STAT PHYS 1

← 1 2 3 →