Superconductivity and Charge Density Waves in the Clean 2D Limit

          @misc{ scivideos_PIRSA:16050035,
            doi = {10.48660/16050035},
            url = {https://pirsa.org/16050035},
            author = {Tsen, Adam Wei},
            keywords = {Quantum Matter},
            language = {en},
            title = {Superconductivity and Charge Density Waves in the Clean 2D Limit},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2016},
            month = {may},
            note = {PIRSA:16050035 see, \url{https://scivideos.org/index.php/pirsa/16050035}}
          }
          

Abstract

We have recently demonstrated an experimental platform to isolate 2D materials that are unstable in the ambient environment. I will discuss our recent studies of the charge density wave compound 1T-TaS2 and superconducting 2H-NbSe¬ in the atomically thin limit, made possible using this technique. In TaS2, we uncover a new surface charge density wave transition that is distinct from that in the bulk layers, as well as demonstrate continuous electrical control over this phase transition. In NbSe2, a small perpendicular magnetic field induces a transition to a quantum metallic phase, the resistivity of which obeys a unique field-scaling consistent with that predicted for a Bose metal. These methods and experiments open new doors for the study of other correlated 2D systems in the immediate future.