Post-Doc position - Grenoble
Within a collaboration between LNCMI Grenoble (CNRS) and PHELIQS (CEA) laboratories this research project aims at a systematic investigation of the signatures of field induced Fermi surface instabilities (Lifshitz transitions). More precisely, it is planned to measure thermoelectric transport properties (Seebeck effect) and thermodynamic properties (magnetization) at low temperatures and under high magnetic field (up to 35T). Comparing these two experimental probes together with theoretical predictions should allow for a clear distinction of the major consequence of Lifshitz transitions: a change in the density of states or extra scattering processes. As a first class of samples, highly correlated electron systems will be investigated (in-house grown high quality single crystals of UCoGe, YbNiSn, etc.) since their generally flat bands at the Fermi level are very sensitive to magnetic fields.
As a second hot spot it is planned to study recent topological materials like Weyl and Dirac semi-metals (for example Cd3As2 or Na3Bi) which exhibit simpler band structures than the former materials, and are expected to exhibit exotic topological transitions.