Charge-density-wave, non-collinear magnetic structure and magneto-transport properties of the single crystalline EuAg$_4$As$_2$

ORAL

Abstract

Layered materials with exotic ground states have attracted a lot of research interest due to the possible competition or interplay among these orders. In this talk, we will discuss the growth and characterization of a layered silver pnictide material, EuAg$_4$As$_2$. Two-phase transitions, one is around 120 K and the other is around 15 K, are revealed by the resistivity, susceptibility, and heat capacity measurements. Single crystal X-ray diffraction data suggests the high-temperature phase transition is of an incommensurate charge density wave type while the single crystal neutron diffraction measurements show the low-temperature phase transition is from a paramagnetic to a non-collinear antiferromagnetic phase transition. We will also discuss the effect of this non-collinear antiferromagnetism on the magnetotransport in EuAg$_4$As$_2$.

–

Presenters

  • Ni Ni

    University of California, Los Angeles, Department of Physics and Astronomy and California Nano Systems Institute, Univ of California - Los Angeles, University of California, Physics, University of California, Los Angeles, Department of Physics and Astronomy and California NanoSystems Institute, University of California, Los Angeles

Authors

  • Ni Ni

    University of California, Los Angeles, Department of Physics and Astronomy and California Nano Systems Institute, Univ of California - Los Angeles, University of California, Physics, University of California, Los Angeles, Department of Physics and Astronomy and California NanoSystems Institute, University of California, Los Angeles

  • Huibo Cao

    Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge National Laboratory, Quantum Condensed Matter Division, Oak Ridge National Laboratory, Neutron Sciences Directorate, Oak Ridge National Laboratory, Neutron Scattering Division, Oak Ridge National Lab, Oak Ridge National Lab, Oak Ridge Natl Lab, Quantum Condensed Matter Division , Oak Ridge National Laboratory

  • Chaowei Hu

    University of California, Los Angeles, Physics and Astronomy, Univ of California - Los Angeles

  • Xin Gui

    Department of Chemistry, Louisiana State University, Louisiana State Univ - Baton Rouge, Department of Chemistry, Louisiana state University

  • Weiwei Xie

    Department of Chemistry, Louisiana State University, Louisiana State Univ - Baton Rouge, Louisiana State Univ, Department of Chemistry, Louisiana state University, Chemistry, Lousiana State University, Department of Physics and Astronomy, Louisiana State Univ - Baton Rouge

  • Bing Shen

    University of California, Los Angeles, University of California