SAMPLE DEPENDENCE OF THE ELECTRON-ELECTRON CONTRIBUTION TO THE ELECTRICAL-RESISTIVITY OF SODIUM AND POTASSIUM

Measurements of the temperature dependence of the electrical resistivity of sodium and potassium give =0+ATn, with n=2.00.1 below 2.1 K for sodium and below 1.4 K for potassium, where 0 is the residual resistivity. It was found that A is sample dependent, varying linearly with (d0)2, where d is the contribution to 0 arising from electron-dislocation scattering. © 1979 The American Physical Society.