Patent ID: 8354718

Claim:
An apparatus, comprising: first and second pocket regions each located in a substrate and being greater in depth than in width, the pocket regions each formed of a first material and each being doped to a greater concentration relative to the substrate; a gate stack located over the substrate and laterally positioned between the first and second pocket regions; first and second source/drain regions laterally positioned on opposing sides of the gate stack and vertically positioned in the substrate between the gate stack and the first and second pocket regions, respectively, the first and second source/drain regions each formed of a second material, the second material being different than the first material; and third and fourth source/drain regions each being doped to a greater concentration relative to the first and second source/drain regions, wherein the first and second pocket regions are collectively laterally positioned adjacent and between the third and fourth source/drain regions, and wherein the third and fourth source/drain regions are vertically positioned in the substrate between the first and second source/drain regions, respectively, and a bulk portion of the substrate, wherein the substrate comprises a first region and a second region, wherein: the first region is below the gate stack and extends from the first source/drain region to the second source/drain region, the first region is doped at a first concentration; and the second region is below and physically contacts the first region and extends from the first pocket region to the second pocket region, the second region is doped at a second concentration that is greater than the first concentration.