Bias changing molecule-lead couple and inducing low bias negative differential resistance for electrons acceptor predicted by first-principles study

摘要

A first-principles study of the transport properties of 3,13-dimercaptononacene-6,21-dione molecule sandwiched between two gold leads is reported. The strong effect of negative differential resistance with large peak-to-valley ratio of 710% is present under low bias. We found that bias can change molecule-lead couple and induce low bias negative differential resistance for electrons acceptor, which may promise the potential applications in molecular devices with low-power dissipation in the future. (C) 2015 Elsevier B.V. All rights reserved.