Magnetic Impurities in Graphene

Abstract

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.

To be published in Physical Review B

References in corpus (13)

• The electronic properties of graphene
• Detection of Individual Gas Molecules Absorbed on Graphene
• Electrochemically Top Gated Graphene: Monitoring Dopants by Raman Scattering
• Friedel oscillations, impurity scattering and temperature dependence of resistivity in graphene
• RKKY in half-filled bipartite lattices: graphene as an example
• Diluted Graphene Antiferromagnet
• Kondo Quantum Criticality of Magnetic Adatoms in Graphene
• Phase transitions in the pseudogap Anderson and Kondo models: Critical dimensions, renormalization group, and local-moment criticality
• Tuning Kondo physics in Graphene with gate voltage
• Localized Spins on Graphene
• Theory of Scanning Tunneling Spectroscopy of Magnetic Adatoms in Graphene
• Magnetic Percolation and the Phase Diagram of the Disordered RKKY model
• Universal crossovers and critical dynamics of quantum phase transitions: A renormalization group study of the pseudogap Kondo problem