Abstract
The electrical resistivity, Hall coefficient, and thermopower as functions of temperature are reported for lightly electron-doped Ca1-x Lax Mn O3 (0≤x≤0.10). Unlike the case of hole-doped ferromagnetic manganites, the magnitude and temperature dependence of the Hall mobility (μH) for these compounds is found to be inconsistent with small-polaron theory. The transport data are better described by the Feynman polaron theory and imply intermediate coupling (α 5.4) with a band effective mass m* ∼4.3 m0 and a polaron mass mp ∼10 m0.
Original language | English (US) |
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Article number | 024422 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 72 |
Issue number | 2 |
DOIs | |
State | Published - Jul 1 2005 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics