  We here present a variable-range hopping model to describe the
chirality-induced spin selectivity along the DNA double helix. In this model,
DNA is considered as a one-dimensional disordered system, where electrons are
transported by chiral phonon-assisted hopping between localized states. Owing
to the coupling between the electron spin and the vorticity of chiral phonons,
electric toroidal monopole appears in the charge-to-spin conductances as a
manifestation of true chirality. Our model quantitatively explains the
temperature dependence of the spin polarization observed in experiments.
