Electrical transport properties of nickel chromium alloy films

The effect of the electron-phonon interactions on the electrical transport properties of NiCr alloy films is studied. The resistivity of the NiCr films is measured between 2 and 300 K, and reveals an overall metallic conduction behavior. The resistivity-temperature curves of NiCr films are successfully interpreted using the traditional electron-phonon coupling theory. The results reveal that the electrons coupling with the acoustic-mode phonons dominate the electrical properties of NiCr films over the entire temperature range investigated, and weak corrections by the electron-optical-phonon interactions are present in the high temperature regime. The dominance of the electron-phonon interactions on the transport behavior of NiCr films is further confirmed by the magnetotransport analysis. The electron-phonon interaction constant of NiCr films is also discussed. (C) 2016 American Vacuum Society.