Superconductivity depression in ultrathin YBa2Cu3O7−δ layers in La0.7Ca0.3MnO3/YBa2Cu3O7−δ superlattices

Novel superconducting semiconducting superlattices: dislocation-induced superconductivity?

Novel superconducting superlattices with transition temperature in the range 2.5-6.4 K consisting only of semiconducting materials are discovered. Among them there are multilayers, including a wide-gap semiconductor as one of the components. It is shown that superconductivity is connected with the interfaces between two semiconductors containing regular grids of the misfit dislocations. The pos...

Superconductivity in quantum-dot superlattices composed of quantum wire networks

Based on calculations using the local density approximation, we propose quantum wire networks with square and plaquette type lattice structures that form quantum dot superlattices. These artificial structures are well described by the Hubbard model. Numerical analysis reveals a superconducting ground state with transition temperatures Tc of up to 90 mK for the plaquette, which is more than doub...

Magnetism and superconductivity in La0.7Ca0.3MnO3/YBa2Cu3O7−δ superlattices

Superconductivity and charge-carrier localization in ultrathin La1.85Sr0.15CuO4/La2CuO4 bilayers

Superconductivity and charge-carrier localization in ultrathin La1.85Sr0.15CuO4/La2CuO4 bilayers K. Sen,1,* P. Marsik,1 S. Das,1,† E. Perret,1 R. de Andres Prada,1 A. Alberca,1,2 N. Biškup,3,4 M. Varela,3 and C. Bernhard1,‡ 1University of Fribourg, Department of Physics and Fribourg Center for Nanomaterials, Chemin du Musée 3, CH-1700, Fribourg, Switzerland 2Swiss Light Source, Paul Scherrer In...

Isoelectric focusing of proteins in rewetted ultrathin polyacrylamide gel layers.

Ultrathin layers of polyacrylamide gel bound to glass can be washed, air-dried, and stored for at least 1 year before rewetting in ampholyte solutions for isoelectric focusing. Short-term drying affects neither fluorescent banding of the ampholytes (not evident in conventional gels) nor resolution of complex protein mixtures while prolonged storage seems to have no deleterious effects. Layers a...