User: Guest  Login
Document type:
journal article 
Author(s):
Ganter, C; Schirmacher, W 
Title:
Generalizated effective-medium approximation for hopping transport in topologically disordered systems 
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...    »
 
Journal title abbreviation:
Phil Mag B 
Year:
2001 
Journal volume:
81 
Journal issue:
Pages contribution:
915-924 
Language:
eng 
Print-ISSN:
0141-8637 
TUM Institution:
Institut für Radiologie