Patent ID: 9659934
Date: 2017-05-23
CPC Classifications: H01L

Claim:
1. A quantum point contact device, comprising: a semiconductor substrate having a top surface; a channel region positioned near the top surface of the semiconductor substrate and doped to a first conductivity type; a gate structure positioned above the channel region, the gate structure having a first polygonal shape and a second polygonal shape, the first and second polygonal shapes overlapping each other at a corner thereof to define a quantum point contact with the channel region; a first doped region positioned adjacent to the channel region and doped to a second conductivity type opposite the first conductivity type, the first doped region aligned with a first side of the gate structure and having a first corner facing the quantum point contact; and a second doped region separated from the first doped region by the channel region and doped to the second conductivity type, the second doped region aligned with a second side of the gate structure and having a second corner facing the quantum point contact, the first and second corners defining a path across the quantum point contact and diagonally crossing the channel region.