Figure 1
From: Phonon-assisted nearly pure spin current in DNA molecular chains: a multifractal analysis

A schematic illustration of a DNA chain connected to the left and right leads and immersed in a vibrational phonon bath. Each base of the DNA chain is connected to one Büttiker’s virtual lead. The blue circle on the DNA chain shows DNA bases. The red and black circles are presented as the sites of metal leads and virtual leads, respectively. All hopping parameters and couplings between DNA and leads are shown.