| 摘要 |
According to one embodiment, a semiconductor device contains a gate electrode, SiGe layers, Si layers, source/drain regions, and silicide layers. The gate electrode is formed on a semiconductor substrate via a gate insulating film. The SiGe layers are formed on both sides of the gate electrode on the semiconductor substrate. Over half of a region of the SiGe layers is higher than an interface between the semiconductor substrate and the gate insulating film. The Si layers are formed on the SiGe layers. The source/drain regions are formed on both sides of the gate electrode in the Si layers, the SiGe layers and the semiconductor substrate. The silicide layers are formed on the Si layers.
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