Abstract
Introducing holes (or partly eliminating electrons) in Mott-Hubbard insulator (with 3 configuration) can be carried out by partial substitution of La with Sr, which produces the strongly correlated metallic phase. Systematic variation of electronic properties in was investigated as a function of the 3d band filling (x) by measurements of resistivity, Hall coefficient, magnetic susceptibility, and specific heat. Up to the vicinity of the metal-insulator phase boundary (∼0.95), behaves as a Fermi liquid system where the carrier mass and scattering rate critically increase as the x=1 () insulator is approached.
- Received 22 September 1992
DOI:https://doi.org/10.1103/PhysRevLett.70.2126
©1993 American Physical Society