Electrical resistivity in amorphous metals: Consequences of phonon ineffectiveness in the diffraction model
Abstract
Electrical transport in amorphous metals is analyzed in the context of the Baym-Faber-Ziman theory. The theory is generalized to incorporate electron mean free path effects through the Pippard-Ziman condition on the electron-phonon interaction. A variety of model t-matrices are considered. The geometrical structure factors are modeled by Percus-Yevick hard sphere forms and a single branch Debye phonon spectrum is assumed. Detailed results for electrical resistivity rho vs. temperature T and the TCR are presented for extensive ranges of 2kF/kp and electron mean free path. The results, incorporating the Pippard-Ziman condition, are consistent with the observed rho vs. T in low resistivity glassy metals. However, although inclusion of the Pippard-Ziman condition dramatically improves agreement with the data, quantitative agreement is not obtained in high resistivity amorphous metals.
- Publication:
-
Final Technical Report Army Armament Research and Development Command
- Pub Date:
- January 1985
- Bibcode:
- 1985army.reptR....M
- Keywords:
-
- Amorphous Materials;
- Computerized Simulation;
- Electrical Resistivity;
- Metals;
- Transport Properties;
- Backscattering;
- Diffraction;
- Electrons;
- Mean Free Path;
- Photons;
- Temperature;
- Electronics and Electrical Engineering