Conductance of a quantum point contact based on spin-density-functional theory
Conductance of a quantum point contact based on spin-density-functional theory
We present full quantum mechanical conductance calculations of a quantum point contact (QPC) performed in the framework of the density functional theory (DFT) in the local spin-density approximation (LDA). We start from a lithographical layout of the device, and the whole structure, including semi-infinitive leads, is treated on the same …