2017/05/31 by Tao Xie, Dongliang Gong, Wenliang Zhang +10
Materials Science · Physics and Astronomy · #Crystal growth #Electrical resistivity and conductivity #Electronic and Structural Properties of Oxides #Iron-based superconductors research #Neutron scattering #Phase (matter) #Phase diagram #Pnictogen #Superconductivity #Superconductivity in MgB2 and Alloys #Transition temperature #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1088/1361-6668/aa7994
published as Supercond. Sci. Technol. 30 (2017) 095002 · 8 pages, 8 figures
arxiv created 2017/05/31 · openalex created_date 2017/06/05 · openalex publication_date 2017/06/14 · arxiv updated 2017/08/01 · openalex updated_date 2026/08/05
Abstract We report a systematic crystal growth and characterization of Ca 1− y La y Fe 1− x Ni x As 2 , the newly discovered 112-type iron-based superconductor. After substituting Fe by a small amount of Ni, bulk superconductivity is successfully obtained in high-quality single crystals sized up to 6 mm. Resistivity measurements indicate common features for transport properties in this 112-type iron pnictide, suggest strong scattering from chemical dopants. Together with the superconducting transition temperature T c , and the Néel temperature T N determined by the elastic neutron scattering, we sketch a three-dimensional phase diagram in the combination of both Ni and La dopings.