Evidence for the immobile bipolaron formation in the paramagnetic state of the magnetoresistive manganites

Guo Meng Zhao, Guo meng Zhao, Y. S. Wang, D. J. Kang, W. Prellier, M. Rajeswari, H. Keller, T. Venkatesan, C. W. Chu, R. L. Greene

研究成果: Article同行評審

55 引文 斯高帕斯(Scopus)

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
文章編號R11949
頁(從 - 到)R11949-R11952
期刊Physical Review B - Condensed Matter and Materials Physics
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

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