Characterization of superconductivity in electron-doped \textit{Ln}OBiS$_2$ compounds with specific heat measurements

ORAL

Abstract

Superconductivity has been reported recently in Bi$_4$O$_4$S$_3$ and electron-doped \textit{Ln}OBiS$_2$ compounds with \textit{Ln} = La, Ce, Pr, Nd, Yb. These materials share a similar crystal structure composed of superconducting BiS$_2$ layers, which are separated by oxide blocking layers. Early studies have concentrated primarily on the electrical transport properties and magnetic susceptibility measurements of these systems. We present results from specific heat measurements, which were performed in order to study and characterize the superconducting and normal-state properties of several electron-doped \textit{Ln}OBiS$_2$ systems.

*Sample synthesis was supported by the US AFOSR MURI grant FA9550-09-1-0603 and heat capacity measurements were conducted under the auspices of the US DOE grant DE-FG02-04-ER46105.

–

Authors

  • Benjamin White

    • University of California, San Diego

  • Duygu Yazici

    • University of California, San Diego

  • Kevin Huang

    • University of California, San Diego

  • Alan Chang

    • University of California, San Diego

  • Aaron Friedman

    • University of California, San Diego

  • M.B. Maple

    • University of California, San Diego