Long-range interaction between adatoms in graphene

Andrei V. Shytov, Dmitry A. Abanin, Leonid S. Levitov

Research output: Contribution to journalArticlepeer-review

90 Scopus citations

Abstract

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.

Original languageEnglish (US)
Article number016806
JournalPhysical review letters
Volume103
Issue number1
DOIs
StatePublished - Aug 6 2009

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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