Abstract
We measured the electrical resistivity under magnetic field and pressure and de Haas–van Alphen (dHvA) oscillations in CeCu 6 . The A value in the Fermi liquid relation of the electrical resistivity ρ= ρ 0 + A T 2 and the cyclotron effective mass are reduced with increasing magnetic fields and pressures. The A value, however, becomes distinct and/or is enhanced at the metamagnetic field, especially, in a characteristic pressure region where the electronic state deviates from the heavy fermion state, for example, at 2.00 GPa.
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