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

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)6621-6625
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume46
Issue number10 A
DOIs
Publication statusPublished - 2007 Oct 9

Fingerprint

Oxygen vacancies
Transport properties
transport properties
oxygen
Substrates
Superconducting transition temperature
electrical resistivity
transition temperature
insulators
conduction
Manganites
Temperature
Lattice mismatch
Oxygen
temperature
Metals
tensile stress
Tensile stress
metals
Scattering

Keywords

  • Colossal magnetoresistance
  • Insulator-metal transition
  • Manganites
  • Pulsed-laser deposition
  • Small polaron
  • Variable range hopping

ASJC Scopus subject areas

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

Cite this

Influence of oxygen vacancies on transport properties of la 2/3Ca1/3MnO3-y, films grown on SrTiO 3 substrates. / Liu, Shiu-Jen; Chen, Shyh Fen; Juang, Jenh Yih; Lin, Jiunn Yun; Wu, Kaung Hsiung; Uen, Tseng Ming; Gou, Yi Shun.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 46, No. 10 A, 09.10.2007, p. 6621-6625.

Research output: Contribution to journalArticle

Liu, Shiu-Jen ; Chen, Shyh Fen ; Juang, Jenh Yih ; Lin, Jiunn Yun ; Wu, Kaung Hsiung ; Uen, Tseng Ming ; Gou, Yi Shun. / Influence of oxygen vacancies on transport properties of la 2/3Ca1/3MnO3-y, films grown on SrTiO 3 substrates. In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 2007 ; Vol. 46, No. 10 A. pp. 6621-6625.
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AU - Juang, Jenh Yih

AU - Lin, Jiunn Yun

AU - Wu, Kaung Hsiung

AU - Uen, Tseng Ming

AU - Gou, Yi Shun

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KW - Pulsed-laser deposition

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KW - Variable range hopping

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