Atomically thin TaS2 devices. (a) Ball and stick model of the crystal structure of the 2H polytype of TaS2. The dashed prism encloses the content of a single unit cell and the metal coordination geometry is highlighted by the red polyhedron. (b) Atomic force microscopy image of two devices fabricated on a 3.5-nm 2H-TaS2 flake. The scale bar is 4 μm in length. The full colour scale of the topograph corresponds to a height of 100 nm. (c) Line profile of the flake taken at the location of the white dotted line in b.
Uni of Valencia researchers show superconducting state can be maintained even when the material in question is reduced from 3 to 2 dimensions, making the efficiency gains needed for technologies like those underlying the frictionless train possible...
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