2003/12/17 by I. Tsukada, Y. Nagao, Yasuhiro Nagao +1 · 3 citations
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Analytical Chemistry (journal) #Bilayer #Chemistry #Condensed matter physics #Crystallography #Cuprate #Doping #Epitaxy #Layer (electronics) #Magnetic and transport properties of perovskites and related materials #Materials science #Nanotechnology #Oxygen #Physics #Physics of Superconductivity and Magnetism #Superconductivity #Thin film #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.69.020504
published in Physical Review B 69(2) (American Physical Society) · 5 pages, 3 figures, To appear in Phys. Rev. B, Rapid Communications
arxiv created 2003/12/17 · openalex publication_date 2004/01/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We investigate the epitaxial growth of bilayer cuprate La2CaCu2O_6+\ensuremathδ using pure ozone as an oxidant, and find that even the crystal with parent composition without cation substitution can show metallic behavior with the aid of epitaxial-strain effect. The hole concentration is controlled simply by excess-oxygen doping, and the films grown under the optimum conditions exhibit superconductivity below 30 K. This is the first result on the superconductivity of bilayer La2CaCu2O_6+\ensuremathδ induced purely by the excess oxygen.