Lattice scattering mobility at low temperatures in quasi one-dimensional metals

We show that for a quasi 1-d metal the resistivity ? varies with temperature T as 1/sinh (? ω /k_BT), ?ω being the energy of the (external) 2k_F phonon involved in the scattering process. The theory fits the observed ? vs. T of (TMTSF)₂PF₆ and other quasi 1-d metals below 60K, where lattice expansion, internal mode scattering and precursor effects of the Peierls transition can be neglected.