Abstract
The paramagnetic-to-antiferroparamagnetic phase transition of CeSb has been studied by high-resolution angle-resolved photoemission spectroscopy. The hole and electron pockets are clearly observed at the Brillouin-zone center and boundary, respectively. The volume of both hole and electron pockets increases when the temperature is lowered across the magnetic phase transition ${(T}_{N}=16\phantom{\rule{0ex}{0ex}}\mathrm{K})$. The observed change of Fermi-surface topology is discussed in terms of the temperature-dependent anisotropic $p\ensuremath{-}f$ mixing.
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