Influence of oxygen vacancies on transport properties of la 2/3Ca1/3MnO3-y, films grown on SrTiO 3 substrates

Shiu-Jen Liu, Shyh Fen Chen, Jenh Yih Juang, Jiunn Yun Lin, Kaung Hsiung Wu, Tseng Ming Uen, Yi Shun Gou

研究成果: 雜誌貢獻文章

3 引文 斯高帕斯(Scopus)

摘要

We prepared La2/3Ca1/3MnO3-y films with various oxygen contents on SrTiO3 substrates and measured the temperaturedependent resistivity of the manganite films under tensile stress due to the lattice mismatch between manganites and singlecrystal substrates. The effect of oxygen vacancies on the transport properties of the films was investigated. The experimental results reveal that the dependence of temperature on the resistivity of fully oxygenated films can be attributed to the adiabatic small-polaron conduction and unconventional one-magnon scattering at temperatures above and far below the insulator-metal (I-M) transition temperature, respectively. However, for highly oxygen-deficient films, the temperature-dependent resistivity can be ascribed to Mott's variable-range- hopping and small polaron metallic conduction at temperatures above and far below the I-M transition temperature, respectively.

原文英語
頁(從 - 到)6621-6625
頁數5
期刊Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
46
發行號10 A
DOIs
出版狀態已發佈 - 2007 十月 9

    指紋

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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