Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2010-08-05
Physics
Condensed Matter
Statistical Mechanics
paper: 12.3 pages, 13 figures, submitted to physica status solidi (b), supporting information: 14.5 pages
Scientific paper
In this paper, we review and substantially develop the recently proposed "Microscopic Response Method", which has been devised to compute transport coefficients and especially associated temperature dependence in complex materials. The conductivity and Hall mobility of amorphous semiconductors and semiconducting polymers are systematically derived, and shown to be more practical than the Kubo formalism. The effect of a quantized lattice (phonons) on transport coefficients is fully included and then integrated out, providing the primary temperature dependence for the transport coefficients. For higher-order processes, using a diagrammatic expansion, one can consistently include all important contributions to a given order and directly write out the expressions of transport coefficients for various processes.
Drabold David A.
Zhang Ming-Liang
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