Pauli susceptibility of A3C60 (A=K, Rb)

E. Koch; F. Aryasetiawan; Germany) (Department of Physics; O. Gunnarsson; R.M. Martin (Max-Planck-Institut f\"ur Festk\"orperforschung; Stuttgart; Sweden) (Department of Physics; University of Illinios; University of Lund; Urbana)

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Pauli susceptibility of A3C60 (A=K, Rb)

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arxiv cond-mat/9701131 v1 pith:Z2XYV6TM submitted 1997-01-19 cond-mat.str-el

Pauli susceptibility of A3C60 (A=K, Rb)

F. Aryasetiawan , O. Gunnarsson , E. Koch , R.M. Martin (Max-Planck-Institut f\"ur Festk\"orperforschung , Stuttgart , Germany) (Department of Physics , University of Lund , Sweden) (Department of Physics

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University of Illinios Urbana)

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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.

Pauli susceptibility of A3C60 (A=K, Rb)

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