Abstract
We report measurements of the anisotropic resistivity of crystals using the Montgomery method. We find that the ab-plane resistivity is nearly linear with temperature down to 10 K, but deviates slightly from linearity below 40 K. The out-of-plane resistivity is metallic above 105 K, but nonmetallic below 105 K. The anisotropy ratio / is temperature dependent and the maximum value is 9× at low temperature. We estimate the effective mass, the Fermi energy, and Fermi velocity, etc., using Kresin and Wolf’s model. The plasma frequency and the transport electron-phonon coupling constant are also calculated in a self-consistent way in combination with our resistivity and Hall coefficient data. We discuss the resistivity in the context of existing theories.
- Received 11 January 1994
DOI:https://doi.org/10.1103/PhysRevB.50.496
©1994 American Physical Society