Patent ID: 8766334

Claim:
A semiconductor device comprising: a substrate formed of a single-crystal silicon carbide first semiconductor; a gate insulating film formed on the substrate; a gate electrode including a layered structure of a semiconductor layer formed of a polycrystalline silicon second semiconductor and formed on the gate insulating film, and a metal semiconductor compound layer formed of a first metal semiconductor compound that is a reaction product of a metal and the second semiconductor; and electrodes formed of a second metal semiconductor compound that is a reaction product of the metal and the first semiconductor, and formed on the substrate with the gate electrode interposed therebetween, wherein an aggregation temperature of the first metal semiconductor compound on the polycrystalline silicon second semiconductor is lower than an aggregation temperature of the second metal semiconductor compound on the single-crystal silicon carbide first semiconductor, and a cluster-state high carbon concentration region is included in an interface between the semiconductor layer and the metal semiconductor compound layer.