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Title: Fourier transform-based scattering-rate method for self-consistent simulations of carrier transport in semiconductor heterostructures

We present a self-consistent model for carrier transport in periodic semiconductor heterostructures completely formulated in the Fourier domain. In addition to the Hamiltonian for the layer system, all expressions for the scattering rates, the applied electric field, and the carrier distribution are treated in reciprocal space. In particular, for slowly converging cases of the self-consistent solution of the Schrödinger and Poisson equations, numerous transformations between real and reciprocal space during the iterations can be avoided by using the presented method, which results in a significant reduction of computation time. Therefore, it is a promising tool for the simulation and efficient design of complex heterostructures such as terahertz quantum-cascade lasers.
Authors:
; ;  [1]
  1. Paul-Drude-Institut für Festkörperelektronik, Hausvogteiplatz 5–7, 10117 Berlin (Germany)
Publication Date:
OSTI Identifier:
22402877
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 15; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CALCULATION METHODS; CHARGE CARRIERS; COMPUTERIZED SIMULATION; ELECTRIC FIELDS; FOURIER TRANSFORMATION; HAMILTONIANS; HETEROJUNCTIONS; MATHEMATICAL SOLUTIONS; PERIODICITY; POISSON EQUATION; SCATTERING; SCHROEDINGER EQUATION; SEMICONDUCTOR MATERIALS