Photoconductivity in manganites

A. Gilabert; R. Cauro; M. G. Medici; J. C. Grenet; H. S. Wang; Y. F. Hu; Qi Li

Photoconductivity in manganites

A. Gilabert, R. Cauro, M. G. Medici, J. C. Grenet, H. S. Wang, Y. F. Hu, Qi Li

Physics

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

21 Scopus citations

Abstract

We report two types of photoconductivity effects observed by illumination of oxygen deficient manganites thin films with UV or visible light. One is the persistent photoconductivity effect observed at low temperature (T < 30 K) when the thin film is in the metallic state. This effect is analog to the persistent photoconductivity observed in the high Tc superconductors particularly in oxygen deficient YBaCuO thin films. The other type of effect is a photo-induced transition to metallic state at temperatures T < 100 K observed in Pr_2/3Sr_1/3MnO₃ thin film which stays always in the semiconducting state in the darkness. This photo induced metallic transition from a semiconducting state leads to a non persistent colossal photoconductivity (several orders of magnitude of decrease of the resistivity).

Original language	English (US)
Pages (from-to)	285-290
Number of pages	6
Journal	Journal of Superconductivity and Novel Magnetism
Volume	13
Issue number	2
State	Published - 2000

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Photoconductivity in manganites",

abstract = "We report two types of photoconductivity effects observed by illumination of oxygen deficient manganites thin films with UV or visible light. One is the persistent photoconductivity effect observed at low temperature (T < 30 K) when the thin film is in the metallic state. This effect is analog to the persistent photoconductivity observed in the high Tc superconductors particularly in oxygen deficient YBaCuO thin films. The other type of effect is a photo-induced transition to metallic state at temperatures T < 100 K observed in Pr2/3Sr1/3MnO3 thin film which stays always in the semiconducting state in the darkness. This photo induced metallic transition from a semiconducting state leads to a non persistent colossal photoconductivity (several orders of magnitude of decrease of the resistivity).",

author = "A. Gilabert and R. Cauro and Medici, {M. G.} and Grenet, {J. C.} and Wang, {H. S.} and Hu, {Y. F.} and Qi Li",

year = "2000",

language = "English (US)",

volume = "13",

pages = "285--290",

journal = "Journal of Superconductivity and Novel Magnetism",

issn = "1557-1939",

publisher = "Springer New York",

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}

TY - JOUR

T1 - Photoconductivity in manganites

AU - Gilabert, A.

AU - Cauro, R.

AU - Medici, M. G.

AU - Grenet, J. C.

AU - Wang, H. S.

AU - Hu, Y. F.

AU - Li, Qi

PY - 2000

Y1 - 2000

N2 - We report two types of photoconductivity effects observed by illumination of oxygen deficient manganites thin films with UV or visible light. One is the persistent photoconductivity effect observed at low temperature (T < 30 K) when the thin film is in the metallic state. This effect is analog to the persistent photoconductivity observed in the high Tc superconductors particularly in oxygen deficient YBaCuO thin films. The other type of effect is a photo-induced transition to metallic state at temperatures T < 100 K observed in Pr2/3Sr1/3MnO3 thin film which stays always in the semiconducting state in the darkness. This photo induced metallic transition from a semiconducting state leads to a non persistent colossal photoconductivity (several orders of magnitude of decrease of the resistivity).

AB - We report two types of photoconductivity effects observed by illumination of oxygen deficient manganites thin films with UV or visible light. One is the persistent photoconductivity effect observed at low temperature (T < 30 K) when the thin film is in the metallic state. This effect is analog to the persistent photoconductivity observed in the high Tc superconductors particularly in oxygen deficient YBaCuO thin films. The other type of effect is a photo-induced transition to metallic state at temperatures T < 100 K observed in Pr2/3Sr1/3MnO3 thin film which stays always in the semiconducting state in the darkness. This photo induced metallic transition from a semiconducting state leads to a non persistent colossal photoconductivity (several orders of magnitude of decrease of the resistivity).

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AN - SCOPUS:0033880018

SN - 1557-1939

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EP - 290

JO - Journal of Superconductivity and Novel Magnetism

JF - Journal of Superconductivity and Novel Magnetism

IS - 2

ER -

Photoconductivity in manganites

Abstract

All Science Journal Classification (ASJC) codes

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