Pressure effects on electrical resistivity of heavy-fermion antiferromagnet Ce2PdGa12

Abstract

We have succeeded in growing high purity single crystalline Ce 2PdGa12 which crystallizes in the tetragonal system (space group P4/nbm). Ce2PdGa12 is a typical heavy-fermion antiferromagnet with the magnetic ordering temperature of 11K at ambient pressure. We investigate the pressure effects on the electrical resistivity for Ce2PdGa12 up to 8GPa. With increasing pressure, the ordering temperature is dramatically suppressed to 3K at 3GPa. The electronic state of Ce2 PdGa12 are tuned by pressure from the heavy-fermion antiferromagnetic state to the non-magnetic state through a critical pressure around Pc∼7GPa. © Published under licence by IOP Publishing Ltd.