The inversely proportional relationship in the asymmetric transport of a diblock co-oligomer junction

摘要

We investigate electron transport properties and the mechanism of current rectification effect in a diblock co-oligomer (diprimidinyl-diphenyl) molecular junction under electron-lattice coupling effect, using an extended Su-Schrieffer-Heeger tight-binding model combined with nonequilibrium Green's function formalism. We find an inversely relationship between the positive threshold bias and the molecular dipole moment under proper electron-lattice coupling.