Resistivity of Interstitials in Copper

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Abstract
The residual resitivity of copper per atomic percent of interstitial atoms is computed in several different models. It is found that the contributions from the defect itself and from the associated lattice strain are of comparable magnitude and that the interference between them tends to reduce the resistivity. A shielded Coulomb potential, Blatt's computed phase shifts, and an electron-lattice interaction constant are variously used to calculate the scattering amplitudes. The necessary parameters are determined from high-temperature resistivity data. Values of about 2 μohm cm per atomic percent are obtained.