Abstract:
A family of highly sensitive devices based on a graphene nanobridge and superconducting electrodes has been developed, manufactured, and examined. These devices can be used to create a graphene-based integral receiver. A cold-electron bolometer prototype with superconductor-insulator-normal metal tunnel junctions has been studied. Its response to a change in the temperature and external microwave radiation has been measured. A superconducting quantum interferometer with a graphene strip as a weak coupling between superconducting electrodes has been examined. The corresponding modulation of the voltage by a magnetic field at a given current has been measured. The effect of the gate voltage on the resistance of graphene has been analyzed for these samples. To confirm that graphene is single-layer, measurements with the reference samples were performed in high magnetic fields, displaying the half-integer quantum Hall effect.
Citation:
M. A. Tarasov, N. Lindvall, L. S. Kuz'min, A. Yurgens, “Family of graphene-based superconducting devices”, Pis'ma v Zh. Èksper. Teoret. Fiz., 94:4 (2011), 353–356; JETP Letters, 94:4 (2011), 329–332