Bulletin of the American Physical Society
APS March Meeting 2011
Volume 56, Number 1
Monday–Friday, March 21–25, 2011; Dallas, Texas
Abstract: K1.00286 : High Field (H,T) Phase Diagram and Anisotropy of CeRhIn$_{5}$ single crystals
Author:
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.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.MAR.K1.286
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