2011/03/15 by Zhaoshun Gao, Gao, Zhaoshun, Yanpeng Qi +11
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Iron-based superconductors research #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #Superconductivity (cond-mat.supr-con) #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.1103.2904
14 pages, 6 figures. The damaged figures (fig.1 and fig.5) during the PDF file conversion were updated in the new version
openalex publication_date 2011/03/15 · arxiv created 2011/03/16 · arxiv updated 2011/03/17 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28
Single crystals of K0.58Fe1.56Se2 were successfully synthesized by a new single step process with the onset superconducting transition temperatures 31.9 K. The x-ray diffraction patterns suggest that they have high crystalline quality and c-axis orientation. A possible modulation structure of Fe-vacancy along c axis was observed. The upper critical field has been determined with the magnetic field along ab-plane and c-axis, yielding an anisotropy of about 3.3. It has also been shown that the critical current density of the K0.58Fe1.56Se2 is about 1.7x104 A/cm2 at 5 K.