Phys.org November 5, 2019
Researchers in the Netherlands created a suspended double layer of molybdenum disulfide with an ionic liquid on both sides that can be used to create an electric field across the bilayer. In the individual monolayer, such a field will be asymmetric, with positive ions on one side and negative charges induced on the other. However, in the bilayer, they could have the same amount of charge induced at both monolayers, creating a symmetrical system. The electric field that was thus created could be used to switch superconductivity on and off. This means that a superconducting transistor could be gated through the ionic liquid. With the suspended bilayer of molybdenum disulfide, they have all the ingredients needed to study some special superconducting states. This is fundamental science that might bring us conceptual changes…read more. TECHNICAL ARTICLE
Schematic (top) and SEM picture (bottom) of the suspended double layer of molybdenum disulfide with ionic liquid gating. Credit: Justin Ye group, Zernike Institute for Advanced Materials, University of Groningen