Microstructures and Superconductivity of Ultrathin YBa2Cu3O7 Films.

Disorder-controlled superconductivity at YBa2Cu3O7/SrTiO3 interfaces

J. Garcia-Barriocanal,1 A. M. Perez-Muñoz,1,2 Z. Sefrioui,1 D. Arias,1,3 M. Varela,1,4 C. Leon,1 S. J. Pennycook,4 and J. Santamaria1 1GFMC. Dpto. Fisica Aplicada III, Universidad Complutense de Madrid, 28040 Madrid, Spain 2CEI Campus Moncloa, UCM-UPM, 28040 Madrid, Spain 3Grupo de Materiales Magnéticos y Nanoestructuras, Universidad del Quindı́o, Armenia, Spain 4Materials Science & Technology D...

architecture and engineering of nanoscale sculptured thin films and determination of their properties

چکیده ندارد.

Coexistence of Superconductivity and Ferromagnetic Phases in YBa2Cu3O7−δ Nanoparticles

High-temperature superconductor YBa2Cu3O7−δ (YBCO) nanopowders were synthesized by the citrate-gel route, which is a modification of the sol-gel method. The fine powders were calcinated at 860 and 900 °C. They were of small size, in the range of 30–35 nm. X-ray diffraction (XRD) patterns verified production of the orthorhombic superconducting phase in all samples. Measuring the magnetic propert...

Magnetic-field-independent superconductivity of ultrathin Pb films on cleaved GaAs surface

We performed magnetotransport measurements on ultathin Pb films deposited onto cleaved GaAs surface and observed two-dimensional superconductivity for an amorphous 2.2-Å-thick film, which is below one monolayer. The superconducting transition is almost independent of parallel magnetic field as high as 14 T. This means that the superconducting state has much larger critical magnetic field than P...

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