Magnetic-field tuned ground states of CeAuBi$_2$ single crystals

ORAL

Abstract

We present detailed temperature- and field-dependent data obtained from magnetization, resistivity and heat capacity measurement performed on nearly stoichiometric CeAuBi$_2$ single crystals. The compound orders antiferromagnetically at $\sim$ 13 K and shows large magnetic anisotropy at low temperatures with the c-direction being an easy axis. The field-dependent magnetization data at low temperatures reveal the existence of a spin-flop transition for \textbf{H}$\|$\textbf{c} ($H_c \sim$75kOe and $T$=1.8K). The zero-field resistivity and heat capacity data show features characteristic of a Ce-based intermetallic with crystal electric field splitting and possible correlated, Kondo lattice effects. The constructed $T-H$ phase diagram, for the magnetic field applied along the easy, [001], direction shows that the magnetic field required to suppress $T_N$ is $\sim$ 75 kOe. The possibility of realization of the field-tuned quantum critical point (QCP) in CeAuBi$_2$ will be discussed.

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Authors

  • H. Hodovanets

    University of Maryland, Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park 20742, USA

  • Tristin Metz

    Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park 20742, USA, University of Maryland, College Park

  • H. Kim

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

  • Yasuyuki Nakajima

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

  • K. Wang

    Center for Nanophysics and Advanced Materials Department of Physics, University of Maryland, Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park 20742, USA

  • J. Yong

    Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park 20742, USA

  • S. R. Saha

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

  • J. S. Higgins

    Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park 20742, USA

  • N. Butch

    CNAM, UMD, College Park 20742, USA/NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA

  • Johnpierre Paglione

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