Abstract
Measurements of thermal conductivity (K) vs temperature are reported for a series of Ca1-xLaxMnO3(0≤x≤0.2) specimens. For the undoped (x = 0), G-type antiferromagnetic compound a large enhancement of κ below the Neél temperature (TN∼125 K) indicates a strong coupling of heat-carrying phonons to the spin system. This enhancement exhibits a nonmonotonic behavior with increasing x and correlates remarkably well with the small ferromagnetic component of the magnetization reported previously [Neumeier and Cohn, Phys. Rev. B 61 14319 (2000)]. Magnetoelastic polaron formation appears to underly the behavior of K and the magnetization at x⊖0.02.
| Original language | English (US) |
|---|---|
| Article number | 100404 |
| Pages (from-to) | 1004041-1004044 |
| Number of pages | 4 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 66 |
| Issue number | 10 |
| DOIs | |
| State | Published - Sep 1 2002 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Cohn, J. L., & Neumeier, J. J. (2002). Heat conduction and magnetic phase behavior in electron-doped Ca1-xLaxMnO3 (0≤x≤0.2). Physical Review B - Condensed Matter and Materials Physics, 66(10), 1004041-1004044. [100404]. https://doi.org/10.1103/PhysRevB.66.100404