High-Temperature Thermopower of and Related Systems

Author

D. Marsh
Paul Ernest Parris, Missouri University of Science and TechnologyFollow

Abstract

We investigate theoretically the high-temperature Seebeck coefficient in LaMnO₃ and related transition-metal-oxide perovskites. Our analysis employs a model for small polaron conduction that takes into account the electronic structure of the 3d orbitals of B-site transition-metal cations, yielding expressions for systems in which conduction occurs through the e_g transition-metal manifold. Limiting forms for the Seebeck coefficient as a function of carrier concentration and site degeneracy are identified for strong and weak Coulomb interactions between electrons on the same and neighboring sites. Results are applied to an analysis of experimental data for LaMnO₃, the La_1-xCa_xMnO₃ series, and the La_1-xSr_xMnO₃ series. © 1996 The American Physical Society.

Recommended Citation

D. Marsh and P. E. Parris, "High-Temperature Thermopower of and Related Systems," Physical Review B - Condensed Matter and Materials Physics, vol. 54, no. 23, pp. 16602 - 16607, American Physical Society, Jan 1996.

The definitive version is available at https://doi.org/10.1103/PhysRevB.54.16602

Department(s)

Physics

International Standard Serial Number (ISSN)

1550-235X; 1098-0121

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 American Physical Society, All rights reserved.

Publication Date

01 Jan 1996