Pressure Induced Suppression to the Valence Change Transition in EuPdAs

الملخص EN

By applying a hydrostatic pressure, we have successfully suppressed the valence change transition in EuPdAs.

The studied compound EuPdAs crystallizes in a P63/mmc space group.

Through resistivity and magnetic susceptibility measurements, we find that EuPdAs shows a phase transition at 180 K and another transition below 10 K at ambient pressure, as was reported before.

The overall transport and magnetic behavior is to some extent similar to that of the parent phase of iron based superconductors.

With application of a hydrostatic pressure, the transition at 180 K is sensitively suppressed with a pressure as low as 0.48 GPa.

However, superconductivity has not been induced with pressure up to 1.90 GPa.