Phase diagrams and Fermi surface properties of ${\mathrm{CePb}}_3$

We illustrated the phase diagrams and measured the de Haas–van Alphen effect of ${\mathrm{CePb}}_3,$ which is a heavy fermion compound with an antiferromagnetic transition at 1.1 K. ${\mathrm{CePb}}_3$ has three phases: antiferromagnetic, spin-flop, and paramagnetic. Three fundamental oscillations denoted by α, β, and γ were observed in the paramagnetic state. Two of them, the α and γ branches, are closed and almost spherical. For the α branch, the natural explanation is provided by the results of band calculation. The heaviest cyclotron effective mass was ${67m}_0$ in the α branch of ${\mathrm{CePb}}_3$ when the magnetic field is applied parallel to 〈100〉. The mass of ${\mathrm{CePb}}_3$ is in a range of 9.3 to ${67m}_0$ and quite enhanced. Despite the natural explanation in topology, as expected from the quite heavy cyclotron mass, the quasiparticle bands are much flatter and the density of states at the Fermi energy is more enhanced than the calculated one.