A Possible New Phase in Ba-Fe-As System

ORAL

Abstract

A new compound in Ba-Fe-As system has been discovered. Single crystals were successfully synthesized from Sn flux. The resistivity reaches a flat minimum around 110~K, then increases drastically at $\sim$80~K and reaches a maximum at $\sim$70~K. The paramagnetic susceptibility shows a SDW-like anomaly around 80~K. The compound is also characterized by X-ray diffraction and electron microscope. The detailed structure analysis will be presented.

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Authors

  • Bing Lv

  • Feng Chen

  • Yuyi Xue

    University of Houston

  • C.W. Chu

    University of Houston and Lawrence Berkeley National Laboratory, Department of Physics and TcSUH, University of Houston, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, University of Houston, Dept. of Physics and Texas Center for Superconductivity, University of Houston, Houston, TX 77204-5002