摘要
Recent research suggests that the charge carriers in the paramagnetic state of the magnetoresistive manganites are small polarons. Here we report studies of the oxygen-isotope effects on the intrinsic resistivity and thermoelectric power in several ferromagnetic manganites. The precise measurements of these isotope effects allow us to make a quantitative data analysis. Our results do not support a simple small-polaron model, but rather provide compelling evidence for the presence of small immobile bipolarons, i.e., pairs of small polarons.
原文 | English |
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文章編號 | R11949 |
頁(從 - 到) | R11949-R11952 |
期刊 | Physical Review B - Condensed Matter and Materials Physics |
卷 | 62 |
發行號 | 18 |
DOIs | |
出版狀態 | Published - 2000 11月 1 |
All Science Journal Classification (ASJC) codes
- 電子、光磁材料
- 凝聚態物理學