Long-Range Interaction between Adatoms in Graphene

被引：88

作者：

Shytov, Andrei V. ^{[1
]}

Abanin, Dmitry A. ^{[2
]}

Levitov, Leonid S. ^{[3
]}

机构：

[1] Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA

[2] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

[3] MIT, Dept Phys, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 01期

关键词：

OSCILLATORY INTERACTION; HYDROGENATION;

D O I：

10.1103/PhysRevLett.103.016806

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a theory of electron-mediated interaction between adatoms in graphene. In the case of resonant scattering, relevant for hydrogenated graphene, a long-range 1/r interaction is found. This interaction can be viewed as a fermionic analog of the Casimir interaction, in which massless fermions play the role of photons. The interaction is an attraction or a repulsion depending on whether the adatoms reside on the same sublattice or on different sublattices, with attraction dominating for adatoms randomly distributed over both sublattices. The attractive nature of these forces creates an instability under which adatoms tend to aggregate.

引用

页数：4

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