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Energy Spectrum of Thin Film Heterostructure
Author(s) -
Gasparyan V. M.,
Kasamanyan Z. A.
Publication year - 1980
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220980205
Subject(s) - heterojunction , electric field , thin film , materials science , condensed matter physics , energy spectrum , density of states , charge density , optoelectronics , physics , nanotechnology , quantum mechanics
Using the Green's function method the charge carrier energy spectrum in a thin film heterostructure is studied taking account of the surface states. The density of states in various parts of the heterostructure is calculated. It is shown that their ratio may vary within large limits. This may lead to the appearance of a negative conductivity in presence of a longitudinal electric field.