Fig. 6. (a) Conductance vs. energy for several rings in the polyynic configuration with E* = 0.2 (blue) and no electric field (red). (b) Energy spectra of the isolated rings from M = 4 to M = 20 for the polyynic configuration in the tight-binding model with E* = 0.2 (circle) and no electric field (X). (c) Variation in the energy spectra of the isolated ring with M = 8 sites in the polyynic configuration for several values of E*.
