Fermi Surface determination of CeAl${}_2$ via de Haas-van Alphen oscillations

In this work, we revisit the Fermi surface properties of CeAl${}_2$, a prototypical heavy-fermion compound that has attracted interest because it promises tractable conditions for investigating the emergence of the heavy electron state in an f-electron system and its evolution across metamagnetic phase transitions. In particular, the aim of the current research is a comprehensive picture of the Fermi surface properties, both, above and below the metamagnetic transitions. Torque magnetometry is used as a measurement technique for the de Haas-van Alphen (dHvA) effect that is complementary to the previously employed modulation technique. First results regarding both dHvA oscillations and the magnetic state via the non-oscillatory torque components are presented. The dHvA orbits are compared to the results of density functional theory calculations.