2003/06/30 by F. C. Chou, J. H. Cho, Patrick A. Lee +7 · 1 citation
Chemistry · Engineering · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Anisotropy #Bromine #Chemistry #Civil engineering #Coal #Coal mining #Condensed matter physics #Crystallography #Engineering #Environmental science #Fly ash #Geophysical Methods and Applications #Geotechnical and construction materials studies #Magnetic and transport properties of perovskites and related materials #Materials science #Mining engineering #Optics #Overburden #Physics #Physics of Superconductivity and Magnetism #Subbase #Superconductivity #Surface mining #Tunneling and Rock Mechanics #Waste management #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.92.157004
5 pages; 5 figures; new data in figures; revised and updated text
arxiv created 2003/10/17 · arxiv updated 2009/11/30 · openalex publication_date 2013/01/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/04/28
Superconducting single crystal samples of Na0.3CoO2.1.3H(2)O have been produced using an electrochemical technique which dispenses with the usual bromine chemical deintercalation method. In fully hydrated crystals, susceptibility and specific heat measurements confirm that bulk superconductivity has been achieved. The extracted normal state density of states indicates Fermi-liquid behavior with strong mass enhancement and a modest Wilson ratio. Measurements of H(c2) for H parallel c and H parallel ab reveal significant anisotropy, and the extracted value for the coherence length is about 100 A, consistent with an extremely narrow bandwidth.