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