About

nextnano.NEGF is an advanced computational tool and the core engine of the nextnano.NEGF package. It utilizes the cutting-edge Non-Equilibrium Green Functions (NEGF) formalism to accurately model quantum transport in planar structures, taking into account a range of scattering processes including longitudinal polar-optical phonon scattering, acoustic phonon scattering, charged impurity scattering, interface roughness scattering, alloy scattering, and electron-electron scattering.

Developed with the aim of providing highly accurate results within a finite computation time for 1D systems, nextnano.NEGF is also capable of computing optical spectra. The combination of these features, along with the coverage of various scattering processes, makes it an ideal tool for top-notch simulations of heterostructures such as quantum cascade lasers (QCLs) and resonant tunneling diodes (RTDs).

The NEGF formalism is a powerful framework to model quantum transport in the presence of scattering processes. The following scattering mechanisms are included:

• Longitudinal optical (LO) phonon scattering
• Acoustic phonon scattering
• Charged impurity scattering
• Interface roughness scattering
• Alloy scattering
• Electron-electron scattering

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