Electronic correlations in graphite and carbon nanotubes from Auger spectroscopy

Abstract

We have determined the screened on-site Coulomb repulsion in graphite and single wall carbon nanotubes by measuring their Auger spectra and performing a new theoretical analysis based on an extended Cini-Sawatzky approach where only one fit parameter is employed. The experimental lineshape is very well reproduced by the theory and this allows to determine the value of the screened on-site repulsion between $2p$ states, which is found to be 2.1 eV in graphite and 4.6 eV in nanotubes. The latter is robust by varying the nanotube radius from 1 to 2 nm.

5 pages, 3 figures, to appear in Phys. Rev. B

References in corpus (7)

• Two-Dimensional Gas of Massless Dirac Fermions in Graphene
• Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
• A linear response approach to the calculation of the effective interaction parameters in the LDA+U method
• Luttinger Liquid Behavior in Carbon Nanotubes
• Superconductivity of bulk CaC6
• High-Tc superconductivity in entirely end-bonded multi-walled carbon nanotubes
• Electronic screening and correlated superconductivity in carbon nanotubes

Cited by in corpus (5)

• Kohn-Luttinger superconductivity in graphene
• Insight on Hole-Hole Interaction and Magnetic Order from Dichroic Auger-Photoelectron Coincidence Spectra
• Phase diagram of the Kohn-Luttinger superconducting state for bilayer graphene
• Kohn-Luttinger superconductivity in monolayer and bilayer semimetals with the Dirac spectrum
• Anomalous superconductivity and superfluidity in repulsive fermion systems