  We report the discovery of a new superconductor from phase change materials
SnSb2Te4. Single crystals of SnSb2Te4 were grown using a conventional
melting-growth method. The sample resistance under pressure was measured using
an originally designed diamond anvil cell with boron-doped diamond electrodes.
The pressure dependence of the resistance has been measured up to 32.6 GPa. The
superconducting transition of SnSb2Te4 appeared at 2.1 K(Tconset) under 8.1
GPa, which was further increased with applied pressure to a maximum onset
transition temperature 7.4K under 32.6 GPa.
