Applied Physics Letters · 2001 · 58 citations · 15 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsSolid State PhysicsThin FilmsDopingSuperconducting MaterialsSuperconducting Thin FilmsThin Film Electrical PropertiesThin-film MaterialsMolecular Beam EpitaxyResistivityResistivity MeasurementSuperconducting PropertiesTemperature DependenceThin-film ConductorsThin-film Superconductors
Single-crystalline Sr1−xLaxCuO2 thin films of electron-doped infinite-layer compounds were grown by molecular-beam epitaxy. Crucial to our success was the use of KTaO3 substrates. The best film showed Tconset=41.5 K and Tczero=39.0 K, which is close to the highest Tconset of 43 K for the bulk value. The resistivity of the optimum-doped film exhibited metallic temperature dependence with a low resistivity of 320 μΩ cm at room temperature and 120 μΩ cm just above Tc.
15
A superconducting copper oxide compound with electrons as the charge carriers
Y. Tokura, H. Takagi, S. Uchida · Nature · 1989 · 1.8K citations
Electron-doped superconductivity at 40 K in the infinite-layer compound Sr1–yNdyCu02
M.G. Smith, Arumugam Manthiram, Jun Zhou et al. · Nature · 1991 · 459 citations