Electronic band structure study of binary MnP-type CoAs under pressure

ORAL

Abstract

The transition metal-pnictide binary materials such as CrAs and RhAs have attracted theoretical and experimental interest due to their intriguing magnetic and superconducting states at low temperatures and high pressures. The metallic binary pnictide FeAs exhibits an intriguing incomensurate spin-density wave ordered state below 70 K that remains to be explained, while its related cousin CoAs is paramagnetic and metallic. We will present full structure optimization calculations under as a function of pressure to investigate the ground state stability of CoAs and its relation to experimental results on single-crystal specimens of FeAs, CoAs and related binary pnictides.

–

Presenters

  • Limin Wang

    CNAM, Department of Physics, Univ of Maryland-College Park, Univ of Maryland-College Park, Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, CNAM, Physics Department, University of Maryland

Authors

  • Limin Wang

    CNAM, Department of Physics, Univ of Maryland-College Park, Univ of Maryland-College Park, Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, CNAM, Physics Department, University of Maryland

  • Daniel Campbell

    CNAM, Department of Physics, University of Maryland, CNAM, Department of Physics, Univ of Maryland-College Park, Univ of Maryland-College Park

  • Johnpierre Paglione

    Center for Nanophysics and Advanced Materials , University of Maryland, CNAM, Department of Physics, University of Maryland, Univ of Maryland-College Park, Department of Physics, University of Maryland, CNAM, Department of Physics, Univ of Maryland-College Park, Univ of Maryland - College Park, College Park, MD 20742-4111, Univ of Maryland-College Park, Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, Center for Nanophysics and Advanced Materials, University of Maryland, University of Maryland, College Park, University of Maryland