Electron-mediated interaction between two impurities in a 1D atomic chain changes sign and magnitude with adatom separation and system doping.
Attraction-repulsion transition in the interaction of adatoms and vacancies in graphene
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abstract
The interaction of two resonant impurities in graphene has been predicted to have a long-range character with weaker repulsion when the two adatoms reside on the same sublattice and stronger attraction when they are on different sublattices. We reveal that this attraction results from a single energy level. This opens up a possibility of controlling the sign of the impurity interaction via the adjustment of the chemical potential. For many randomly distributed impurities (adatoms or vacancies) this may offer a way to achieve a controlled transition from aggregation to dispersion.
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cond-mat.mes-hall 1years
2019 1verdicts
UNVERDICTED 1representative citing papers
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Bulk-mediated interaction between impurities in 1D atomic chains
Electron-mediated interaction between two impurities in a 1D atomic chain changes sign and magnitude with adatom separation and system doping.