Superconductivity at 3.85 K in BaPd

The single crystal of ThCr2Si2-type BaPd2As2 was successfully prepared by a self-flux method, and the crystal structure was characterized by X-ray diffraction method with the lattice parameters $a=4.489(2)\ \text{\AA}$ and $c=10.322(3)\ \text{\AA}$ (space group $I4/mmm$ , No. 139). Bulk superconductivity below a Tc (critical temperature) of 3.85 K was revealed in this compound by the measurements of resistivity, magnetic susceptibility and specific heat, and this Tc is much higher than those of other isostructural Pd-based superconductors