Abstract
We study the evolution with pressure P and band filling y of the heat capacity, Hall coefficient, and resistivity at the approach to the T→0 Mott-Hubbard metal-insulator transition (MIT) in highly correlated . Under P, the electronic effective mass diverges at the MIT with a negligible change in carrier concentration n away from half-filling. Conversely, in the doped system actually decreases as the MIT is approached, while n increases linearly with y. The low-T magnetic order in the metal helps us deconvolute contributions from charge correlations and spin fluctuations.
- Received 7 September 1993
DOI:https://doi.org/10.1103/PhysRevB.48.16841
©1993 American Physical Society