CeFePO: a heavy fermion metal with ferromagnetic correlations.

@article{Brning2008CeFePOAH,
  title={CeFePO: a heavy fermion metal with ferromagnetic correlations.},
  author={E. M. Br{\"u}ning and Cornelius Krellner and Michael Baenitz and Anton Jesche and Frank Steglich and Christoph Geibel},
  journal={Physical review letters},
  year={2008},
  volume={101 11},
  pages={
          117206
        }
}
The ground state properties of CeFePO, a homologue of the new high temperature superconductors RFePnO1-xFx, were studied by means of susceptibility, specific heat, resistivity, and NMR measurements on polycrystals. All the results demonstrate that this compound is a magnetically nonordered heavy fermion metal with a Kondo temperature TK approximately 10 K, a Sommerfeld coefficient gamma=700 mJ/mol K2, and a mass enhancement factor of the order of 50. Analysis of the susceptibility data and of… 
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