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Title: Nonequilibrium Green's function formulation of intersubband absorption for nonparabolic single-band effective mass Hamiltonian

The formulas are derived that enable calculations of intersubband absorption coefficient within nonequilibrium Green's function method applied to a single-band effective-mass Hamiltonian with the energy dependent effective mass. The derivation provides also the formulas for the virtual valence band components of the two-band Green's functions which can be used for more exact estimation of the density of states and electrons and more reliable treatment of electronic transport in unipolar n-type heterostructure semiconductor devices.
Authors:
 [1]
  1. Department of Electronics Fundamentals, Rzeszów University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów (Poland)
Publication Date:
OSTI Identifier:
22398986
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 18; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; DENSITY OF STATES; EFFECTIVE MASS; ELECTRONS; ENERGY DEPENDENCE; GREEN FUNCTION; HAMILTONIANS; HETEROJUNCTIONS; N-TYPE CONDUCTORS; SEMICONDUCTOR DEVICES; VALENCE