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

doi:10.1143/JJAP.46.6621

Influence of oxygen vacancies on transport properties of la _2/3Ca_1/3MnO_3-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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We prepared La_2/3Ca_1/3MnO_3-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 language	English
Pages (from-to)	6621-6625
Number of pages	5
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	46
Issue number	10 A
DOIs	https://doi.org/10.1143/JJAP.46.6621
Publication status	Published - 2007 Oct 9
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

General Engineering
General Physics and Astronomy

Access to Document

10.1143/JJAP.46.6621

Cite this

Influence of oxygen vacancies on transport properties of la _2/3Ca_1/3MnO_3-y, films grown on SrTiO ₃ substrates. / Liu, Shiu Jen; Chen, Shyh Fen; Juang, Jenh Yih et al.
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 journal › Article › peer-review

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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.",

keywords = "Colossal magnetoresistance, Insulator-metal transition, Manganites, Pulsed-laser deposition, Small polaron, Variable range hopping",

author = "Liu, {Shiu Jen} and Chen, {Shyh Fen} and Juang, {Jenh Yih} and Lin, {Jiunn Yun} and Wu, {Kaung Hsiung} and Uen, {Tseng Ming} and Gou, {Yi Shun}",

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AU - Liu, Shiu Jen

AU - Chen, Shyh Fen

AU - Juang, Jenh Yih

AU - Lin, Jiunn Yun

AU - Wu, Kaung Hsiung

AU - Uen, Tseng Ming

AU - Gou, Yi Shun

PY - 2007/10/9

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N2 - 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.

AB - 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.

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KW - Insulator-metal transition

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KW - Pulsed-laser deposition

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KW - Variable range hopping

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