Non-Ohmic Electrical Conduction in the Highly One-Dimensional Semiconductor Methyltriphenylarsonium Tetracyanoquinodimethane

Abstract
We have observed deviations from Ohm's law in single crystals of methyltriphenylarsonium tetracyanoquinodimethane: Meϕ3As(TCNQ)2. We propose a model based upon tunneling of electrons through barriers in the conducting strands. Electrical conductivity and electron and nuclear magnetic resonance are used to accomplish a successful quantitative test of the model.