| Autor: |
P. L. Bach, J. M. Vila-Fungueiriño, V. Leborán, Elías Ferreiro-Vila, B. Rodríguez-González, F. Rivadulla |
| Jazyk: |
angličtina |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
APL Materials, Vol 1, Iss 2, Pp 021101-021101 (2013) |
| Druh dokumentu: |
article |
| ISSN: |
2166-532X |
| DOI: |
10.1063/1.4818356 |
| Popis: |
We propose a novel route for optimizing the thermoelectric power of a polaronic conductor, independent of its electronic conductivity. This mechanism is exemplified here in thin-films of La2NiO4+δ. Tensile stress induced by epitaxial growth on SrTiO3 doubles the thermoelectric power of ≈15 nm thick films relative to ≈90 nm films, while the electronic conductivity remains practically unchanged. Epitaxial strain influences the statistical contribution to the high temperature thermopower, but introduces a smaller correction to the electronic conductivity. This mechanism provides a new way for optimizing the high temperature thermoelectric performance of polaronic conductors. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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