Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2011-07-13
Phys. Rev. B 84, 075414 (2011)
Physics
Condensed Matter
Strongly Correlated Electrons
To be published in Physical Review B
Scientific paper
10.1103/PhysRevB.84.075414
We used a quantum Monte Carlo method to study the magnetic impurity adatoms on graphene. We found that by tuning the chemical potential we could switch the values of the impurity's local magnet moment between relatively large and small values. Our computations of the impurity's spectral density found its behavior to differ significantly from that of an impurity in a normal metal and our computations of the charge-charge and spin-spin correlations between the impurity and the conduction band electrons found them to be strongly suppressed. In general our results are consistent with those from poor man's scaling and numerical renormalization group methods.
Gubernatis James E.
Hu Fu-Min
Lin Hai-Qing
Ma Tianxing
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