Expérimental
In the present internship, we will focus on the intriguing interplay between topology and ferroelectricity. From a fundamental point of view, combining ferroelectricity with topology is predicted to host Weyl fermions. These relativistic fermions can be mimicked by massless electrons that possess a definite chirality, meaning that their spins are parallel or antiparallel to their momenta. They are at the heart of a large number of outstanding properties that are just starting to be addressed, such as dissipationless chiral currents driven by the chiral magnetic effect, efficient spin-charge conversion due to the large anomalous Hall effect or efficient higher harmonic generation due to ultrafast dynamics. Weyl fermions are also promising particles to form qubits based on chirality. Therefore, it is of great interest to establish a platform capable of control and manipulation of Weyl fermions.