Non-Ohmic current-voltage characteristics in the positively charged tetrathiafulvalene (TTF) molecular crystals

摘要

The mechanism of an extraordinary increase in conductivity at larger applied voltage than the critical voltage generally observed in the one-dimensional electronic systems such as tetrathiafulvalenium-tetracyanoquinodimethanide (TTF-TCNQ) is quantitatively investigated. The tunneling effects of the nondissipative diamagnetic currents between the two neighboring localized TTF unit cells and the current-voltage characteristics at low temperature process (OK