Pauli susceptibility of A3C60 (A=K, Rb)

Details Pauli susceptibility of A3C60 (A=K, Rb) Pauli susceptibility of A3C60 (A=K, Rb)

1997-01-19

arxiv.org/abs/cond-mat/9701131v1

Phys. Rev. B 55, R10165 (1997)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, revtex, 2 figures, submitted to Phys. Rev. B more information at http://www.mpi-stuttgart.mpg.de/dokumente/andersen/f

Scientific paper

10.1103/PhysRevB.55.R10165

The Pauli paramagnetic susceptibility of A3C60 (A= K, Rb) compounds is calculated. A lattice quantum Monte Carlo method is applied to a multi-band Hubbard model, including the on-site Coulomb interaction U. It is found that the many-body enhancement of the susceptibility is of the order of a factor of three. This reconciles estimates of the density of states from the susceptibility with other estimates. The enhancement is an example of a substantial many-body effect in the doped fullerenes.

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