Magnetic impurities in graphene

摘要: We used a quantum Monte Carlo method to study the magnetic impurity adatoms on graphene. found that by tuning chemical potential we could switch values of local magnet moment between relatively large and small values. Our computations spectral density its behavior differ significantly from an in normal metal our charge-charge spin-spin correlations conduction-band electrons them be strongly suppressed. In general, results are consistent with those poor man's scaling numerical renormalization group methods.