Tutorials

This site organizes tutorials on variety of topics related to simulations with nextnano++. The tutorials are organized in general groups of topics wihtout particular order suggesting line of education. Each tutorial assumes familiarity with the materials presented in Getting Started. For speciffic examples of device simulations, plese visit Examples.

Quantum Mechanics

• Harmonic Oscillator
• Infinite quantum well
• Triangular well
• Double quantum well
• Electron States in Quantum Boxes
• Orbitals of the hydrogen atom
• Landau levels of a bulk GaAs sample in a magnetic field
• Transmission (CBR)

Physics of Semiconductors

• Dispersion in infinite superlattices: Minibands (Kronig-Penney model)
• k.p dispersion in bulk GaAs (strained / unstrained)
• k.p dispersion in bulk unstrained, compressively and tensely strained GaN (wurtzite)
• Energy dispersion of holes in a quantum well
• Exciton Binding Energy in an Infinite Quantum Well
• Excitonic absorption in an infinite quantum well

Basic Semiconductor Devices

• p-n junction in the dark
• p-n junction under illumination
• Silicon MOS Capacitor
• Silicon MOSFET
• Subband occupations of 2DEG InGaAs/InAlAs HEMTs

Advanced Quantum Devices

• Topological Insulators
• Landauer conductance and conductance quantization: from quantum wires to quantum point contacts
• Transmission through a nanowire (CBR)
• Conductance of a quantum point contact (gated two-dimensional electron gas)
• Depletion of electrons in a two-dimensional electron gas (2DEG)

General Simulation Approaches

• Optical absorption for interband and intersubband transitions
• Resonant photoluminescence of InGaAs/GaAs QWs
• Non-resonant photoluminescence of GaAs/AlGaAs QWs
• Wurtzite GaN/AlN/GaN on Si(111)
• Transmission through a nanowire (CBR)

Numerics and Methodology

• How to control convergence
• How to set attributes in k_integration{} - integrating over the FBZ
• How to control energy grids
• Modeling Quantum Effects in Large Gated Systems