Patent ID: 8580660

Claim:
A method comprising: forming a fin structure, the fin structure including a left side surface and a right side surface; forming a capping layer on top of the fin structure, the capping layer causing the fin structure to be strained, a left side surface of the capping layer being substantially aligned with the left side surface of the fin structure, and a right side surface of the capping layer being substantially aligned with the right side surface of the fin structure; forming a first gate structure on top of the capping layer, a width of the first gate structure being substantially similar to a width of the fin structure, a left side surface of the first gate structure being substantially aligned with the left side surface of the capping layer and the left side surface of the fin structure, and a right side surface of the first gate structure being substantially aligned with the right side surface of the capping layer and the right side surface of the fin structure; and forming a second gate structure over the fin structure, the capping layer, and the first gate structure.