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24 January 2021
 
  » pubmed » pmid17155824

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Friedel oscillations, impurity scattering, and temperature dependence of resistivity in graphene
Vadim V Cheianov ; Vladimir I Fal’ko ;
Date 1 Dec 2006
Journal Phys Rev Lett, 97 (22), 226801
AbstractWe show that Friedel oscillations (FO) in grapehene are strongly affected by the chirality of electrons in this material. In particular, the FO of the charge density around an impurity show a faster (deltarho approximately r;{-3}) decay than in conventional 2D electron systems and do not contribute to a linear temperature-dependent correction to the resistivity. In contrast, the FO of the exchange field which surrounds atomically sharp defects breaking the hexagonal symmetry of the honeycomb lattice lead to a negative linear T dependence of the resistivity.
Source PubMed, pmid17155824
Other source [GID 449716] cond-mat/0608228
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