DQMP Seminar - A novel platform for topological superconductivity and spin-orbitronics at oxides interfaces

10.06.2025 13:00 – 14:00

I will discuss a novel platform for topological superconductivity and spin-orbitronics based on the two dimensional gases (2DEGs) at the interface between band insulating oxides, like LaAlO3 and SrTiO3. Being characterized by a unique combination of unconventional spin-orbit coupling, magnetism, and 2D-superconductivity, these systems naturally possess most of the fundamental characteristics needed for the realization of a topological superconductor [1-3]. These properties can be widely tuned by electric field effect acting on the orbital splitting and occupation of the non-degenerate 3dxy and 3dxz, yz bands. The topological state in oxide 2DEGs and quasi-one-dimensional nanochannels could be therefore suitably controlled, leading to conceptual new methods for the realization of a topological quantum electronics based on the tuning of the orbital degrees of freedom [4,5]. Fingerprints of topological superconductivity and spin-orbitronics phenomena will also be discussed in the context of Josephson junctions’ properties, like the superconducting diode effect[6] and Edelstein effect[7].

Lieu

Bâtiment: Ecole de Physique

Auditoire Stückelberg

entrée libre