Crossover from more to less ordered vortex state on field-cooling a weakly pinned crystal of Ca[sub 3]Rh[sub 4]Sn[sub 13]

We present the history dependence of the critical current density, jc (H,T) via the ac susceptibility measurements performed in a weakly pinned single crystal of superconducting Ca3Rh4Sn13. Our results show striking evidence for a more spatially ordered vortex states in the field-cooled mode in contrast to that expected in zero field-cooled mode well below the field limit, above which the Peak Effect could be observed for zero field-cooled vortex states