STUDY ON HYDROGENATED CARBON ATOM CHAINS WITH NEGATIVE DIFFERENTIAL RESISTANCE EFFECT.

Using first-principles calculations combined with a nonequilibrium Green\'s function method, weinvestigatethe transport properties of four carbon chains connected to armchair carbon nanotubes.At very low bias voltage, a strong negative differential resistance effect is present.Moreover, Such effect can be modified by using different radicals in the terminal of carbon chain.This paper realizes that not only ?odd? carbon chains can induce negative differential resistance effect, which indicate potential applications in nanomolecular-electronics.