Synthesis and Properties of CaCuAs and CaCu$_2$As$_2$

ORAL

Abstract

Motivated by the recent studies on iron pnictides, we synthesized CaCuAs and CaCu$_2$As$_2$. Single crystals of CaCuAs were also grown successfully. The resistivity, magnetic susceptibility and thermoelectric power were measured and SDW- like anomalies were observed and compared. The thermopower for both CaCuAs and CaCu$_2$As$_2$ are positive from room temperature down to 10~K, indicating holes as the majority carrier. We will report doping studies and discuss the possiblities to induce superconductivity in this system.

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Authors

  • Feng Chen

  • Bing Lv

  • 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