Field effect on the non-Fermi liquid in Ce(Ru0.5Rh0.5)2Si2 as studied by specific heat measurements

We report the results of the specific heat measurements of Ce(Ru 0.5 Rh 0.5 ) 2 Si 2 under magnetic field. Ce(Ru 0.5 Rh 0.5 ) 2 Si 2 shows the non-Fermi liquid (NFL) behavior at zero field; for instance, the specific heat divided by temperature (C/T) shows a logarithmic divergent behavior down to 0.1 K. The divergent behavior of C/T can be easily suppressed in applying small magnetic field ( 4.0 T). Furthermore, anomalous field dependence of C/T is observed; C/T decreases very rapidly below 0.5 T as field increasing and decreases more gently at higher filed.