Spin scattering and spin-orbit coupling in metals

An identity between ε, the probability of a spin disorientation at a metal surface with the ratio of the phonon resistivity scattering time, τ_ph, to the phonon spin scattering time, τ_2ph, in the bulk metal is established. Also it is shown that, for diffuse resistivity scattering, ε at a metal-metal interface is given by the $\text{τ}{}_{\mathrm{ph}}\text{τ}{}_{\mathrm{2ph}}\text{>}$ ratio in the bulk of the higher Z metal. Finally from an approximate fit of ε and the $\text{τ}{}_{\mathrm{ph}}\text{τ}{}_{\mathrm{2ph}}$ ratios to α⁴Z⁴ it is proposed that CESR may be readily observed in titanium and molybdenum.