Surface Phonon Scattering in the Electrical Resistivity of Co/Ni Superlattices
Abstract
The electrical resistivity of Co/Ni superlattices was measured as a function of film thicknesses, superlattice period, and temperature. The temperature dependent resistivity appears to be independent of film thickness or superlattice period for thick films. However, the resistivity increased rapidly with temperature when the film thickness is less than the mean free path of the electron, which may be explained by including surface phonon scattering in the transport process. The resistivities are well described by the Bloch-Gruneisen model with a reduced Debye temperature and additional surface phonon modes.
- Publication:
-
APS March Meeting Abstracts
- Pub Date:
- March 1996
- Bibcode:
- 1996APS..MAR.Q1703S