Abstract
The carrier mobility deduced from the experimental low-field conductivity σ and the carrier concentration (calculated from the known gap) is ∼ 10 4 cm 2/Vsec in TTF-TCNQ (tetrathiafulvalene tetracyanoquinodimethane) and its Se analog TSeF-TCNQ. The observed low temperature increase in σ with field arises from heating of the carriers. This results in several nonlinear effects, e.g., increase in the mobility, surmounting of barriers (arising from charge density wave accommodation to defects) and creation of electron-hole pairs.
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