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Titel:

Generalizated effective-medium approximation for hopping transport in topologically disordered systems

Dokumenttyp:
journal article
Autor(en):
Ganter, C; Schirmacher, W
Abstract:
A generalized effective-medium approximation (EMA) for hopping transport in topologically disordered systems such as amorphous semiconductors or impurity bands of crystalline semiconductors is derived. In contrast with previous theories we are able to include the influence of closed loops in the path summation. These terms are responsible for the algebraic long-time tails of the velocity autocorrelation function which also show up as non-analytic terms in the low-frequency part of the ac conduct...     »
Zeitschriftentitel:
Phil Mag B
Jahr:
2001
Band / Volume:
81
Heft / Issue:
9
Seitenangaben Beitrag:
915-924
Sprache:
eng
Print-ISSN:
0141-8637
TUM Einrichtung:
Institut für Radiologie
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