Corrected Article: “ac response of a carbon chain under a finite frequency bias” [J. Chem. Phys. 127, 104701 (2007)]

Yunjin Yu; Bin Wang; Yadong Wei
October 2007
Journal of Chemical Physics;10/28/2007, Vol. 127 Issue 16, p169901
Academic Journal
Based on nonequilibrium Green’s function approach and density functional theory, we report first principles investigation on ac transport of four carbon atomic chain connected by two semi-infinite aluminum leads, Al–C4–Al. For small alternating external bias voltage, we expanded nonequilibrium Green’s function to the first order in the external voltage and calculated the dynamical conductance. The suppression of the dynamic conductance was obtained near the resonant level, while far away from the resonance, the large enhancement of the dynamic conductance was observed. These behaviors can be understood well under the wide-band limit. By changing the coupling distance between the carbon atom and the aluminum leads, the system could change its transport response between capacitivelike and inductivelike.


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