High pressure study on the heavy fermion superconductor CePt3Si by AC calorimetry

Abstract: We have determined the pressure-temperature phase diagram of heavy-fermion superconductor by the AC heat capacity measurement. The Néel temperature decreases with increasing pressure and becomes zero at the critical pressure . On the other hand, the superconducting phase exists in a wider pressure region from ambient pressure to about 1.5GPa. The phase diagram of is thus very unique and has never been reported before for other heavy fermion superconductors. [Copyright &y& Elsevier]