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CAMP Seminar: Superconductivity and Charge Density Waves in the Clean 2D Limit

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Wei Tsen, University of Waterloo
When
28 February 2017 from 3:30 PM to 4:30 PM
Where
339 Davey Laboratory
Contact Name
Kin Fai Mak
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We have recently demonstrated an experimental platform to isolate 2D materials that are unstable in the ambient environment. I will discuss our studies of the charge density wave compound 1T-TaS2 and superconducting 2H-NbSe2 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.

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