New quantum physical phenomena involving both orbital and spin degrees of freedom occur in conductors in confined geometries at very low temperature. These are explored in the group in a variety of systems, such as mesoscopic Aharonov Bohm rings, graphene layers, nanowires, carbon nanotubes, and topological insulators. We also take advantage of the fact that these quantum phenomena are exemplified in the presence of superconducting electrodes offering even richer domains of investigation in hybrid superconducting/normal mesoscopic systems.
A large number of experimental tools are developed in our laboratory, going from nanofabrication techniques to highly sensitive magneto-transport, orbital magnetisation and noise measurements at mK temperatures in a large frequency range. New opportunities have emerged recently with the installation of Helium focus ion beam and CRYO-free dilution refrigerators.
Research topics :
- topological insulator
- graphen and van der Waals structures
- carbon nanotubes
- electrons on helium