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On the Density of States of a Disordered Peierls‐Fröhlich Chain
Author(s) -
Fischbeck H. J.,
Hayn R.
Publication year - 1990
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.2221580218
Subject(s) - condensed matter physics , chain (unit) , physics , scattering , quantum mechanics
Using the supersymmetry method an exact analytic formula for the integrated density of states of a disordered half‐filled Peierls‐Fröhlich system is derived. All kinds of disorder which can be handled in the continuum approximation, i. e. forward and backward scattering as well as (alternating) bond disorder, are included. Special cases are discussed.