  Mixing of spin singlet and spin triplet superconducting pairing state is
expected in noncentrosymmetric superconductors (NCS) due to the inherent
presence of Rashba-type antisymmetric spin-orbit coupling. Unlike low symmetry
(tetragonal or monoclinic) NCS, parity is isotropicaly broken in space for
cubic NCS and can additionally lead to the coexistence of magnetic and
superconducting state under certain conditions. Motivated with such enriched
possibility of unconventional superconducting phases in cubic NCS we are
reporting successful formation of single crystalline cubic noncentrosymmetric
PdBiSe with lattice parameter a = 6.4316 {\AA} and space group P2_1 3 (space
group no. 198) which undergoes to superconducting transition state below 1.8 K
as measured by electrical transport and AC susceptibility measurements.
Significant strength of Rashba-type antisymmetric spin-orbit coupling can be
expected for PdBiSe due to the presence of high Z (atomic number) elements
consequently making it potential candidate for unconventional
superconductivity.
