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NEGF quantum transport code based on the MSB method
This tool offers the Multi-Scattering Büttiker (MSB) probe model, a simplified version of the Non-Equilibrium Green's Function (NEGF) method covering longitudinal polar-optical phonon scattering and acoustic phonon scattering.
Despite its simplified framework, the MSB model delivers realistic quantum transport calculation, as it contains the two most relevant scattering mechanisms. In comparison to the standard NEGF model, this tool is orders of magnitude more efficient while still accurately reproducing results obtained with the NEGF method. It is especially useful for modeling quantum transport in Resonant Tunneling Diodes (RTDs), where it produces current-voltage characteristics. Furthermore, for Quantum Cascade Lasers (QCLs), it computes optical gain spectra. However, our code has not undergone extensive testing for QCL simulations. Therefore, if you are interested in QCLs, we strongly recommend using the nextnano.NEGF software, where we have achieved excellent agreement between experimental data and theoretical predictions over many years of experience.
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