Successive metamagnetic transitions and magnetoresistance in the low-carrier-density strongly correlated electron system CeP

Successive metamagnetic transitions in CeP are studied through magnetoresistance measurements up to 31.5 T over a wide temperature range between 0.7 and 44.1 K. As in previous papers, we find a series of transitions in field and temperature that constitute a phase diagram. However, we find the observed transitions not to be periodic in inverse field, and hence our results do not support previous models where the transitions are triggered by crossings of the up- and down-spin Landau levels in a particular electronic energy band. The present phase diagram reveals a close similarity to that of CeSb, and its general features are satisfactorily explained with a simple thermodynamic model. [S0163-1829(98)01425-8].