Fermi Surface of Ce-Monopnictides in Various Magnetic Ordered States

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Abstract
Band structure calculations for the ferro- and ferrimagnetic phases of CeSb and CeBi are made based on the p-f mixing model and by including the full treatment of the anisotropic d-f exchange interaction in Ce ion. Calculated results well correspond to the Fermi surfaces observed by the de Haas van Alphen experiments. The band which hybridizes most strongly with the occupied f-states has not been observed. The mass enhancement factor for this band due to the scattering with magnon like modes is calculated to be about 11.6. This is consistent with the heavy fermion character of the band expected from low temperature specific heat measurement.

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