Electron-electron and electron-phonon interactions in alkali metal doped fullerenes: Implications for the resistivity

Temperature dependence of resistivity of K3C60 is theoretically investigated on the basis of Ziman's formula. Estimated phonon contribution when subtracted from the single crystal data infers a quadratic temperature dependence over the most of temperature range (20 less than or equal to T less than or equal to 100K). Quadratic temperature dependence is understood in terms of 3D electron-electron inelastic scattering.