High Field (H,T) Phase Diagram and Anisotropy of CeRhIn$_{5}$ single crystals

POSTER

Abstract

The specific heat ($C_{p})$ of a single crystal sample of composition CeRhIn$_{5}$ was measured as a function of temperature and magnetic field applied perpendicular and parallel to the crystallographic $c-$axis. Our experiments, carried out at temperatures below the AFM ordering temperature $T_{N}$ = 3.7 K, show a clear anomaly in $C_{p}(H)$ when the applied field is strong enough to suppress the magnetic order. This anomaly, which reduces the magnitude as the temperature is lowered, was used to map the ($H,T)$ phase diagram for the first time to a magnetic field of 55 T and temperatures as low as 700mK.\footnote{Y. Kohama, C. Marcenat, T. Klein, and M. Jaime, \textit{Rev. Sci. Instrum}., \textbf{81}, 104902 (2010).} Extrapolation of the low temperature phase boundary indicates the presence of a magnetic field-induced quantum critical point at $H_{c} \approx$ 50 T that is weakly dependent of the sample orientation, although intermediate magnetic fields reveal clear anisotropy. Our results will be discussed in the context of field-induced quantum phase transitions in strongly anisotropic correlated matter.

Authors

  • Yoshimitsu Kohama

    • LANL
    • MPA-CMMS, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
    • NHMFL, Los Alamos National Laboratory, Los Alamos, NM 87545, USA

  • Huiqiu Yuan

    • Department of Physics, Zhejiang University, Hangzhou 310027, China

  • Lin Jiao

    • Department of Physics, Zhejiang University, Hangzhou 310027, China

  • Marcelo Jaime

    • Los Alamos National Laboratory, Los Alamos, NM, USA
    • LANL
    • NHMFL-Los Alamos
    • MPA-CMMS, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
    • NHMFL, Los Alamos National Laboratory, Los Alamos NM 87545, USA

  • Fedor Balakirev

    • LANL
    • NHMFL, LANL, Los Alamos, NM
    • MPA-CMMS, Los Alamos National Laboratory, Los Alamos, NM 87545, USA

  • Eric Bauer

    • Los Alamos Natl. Lab., NM, USA
    • Los Alamos National Lab, MPA-CMMS
    • Los Alamos Nat. Lab.
    • MPA-CMMS, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
    • Los Alamos National Laboratory
    • Los Alamos National Laboratory, Los Alamos, NM 87545