Some Effective Tight-Binding Models for Electrons in DNA Conduction: A Review
Figure 2
(a) The spectrum of the -orbitals of A, G, C, and T. (b) The spectrum of the -orbitals of a sugar-phosphate group. PO stands for the phosphate group where the electron hopping between the oxygen sites is taken into account, while stands for the phosphate group where the electron hopping between the oxygen sites is forbidden. SP stands for the sugar-phosphate group where the electron hopping between the oxygen sites is taken into account. The energies are measured in units of . Here dots () mean -electrons and the level with four dots means the double degeneracy of the level.
