Meyer-Neldel rule in the conductivity of manganite single crystals

J. Przybytek; V. Markovich; G. Jung

doi:10.1103/PhysRevB.98.115159

Meyer-Neldel rule in the conductivity of manganite single crystals

J. Przybytek, V. Markovich, G. Jung

Department of Physics

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4 Scopus citations

Abstract

The Meyer-Neldel behavior of conductivity of low-doped manganite La1-xCaxMnO3 single crystals has been investigated. The evolution of the isokinetic temperature of conductivity, modified by Ca-doping, hydrostatic pressure, and current bias has been determined. In addition, the evolution of isokinetic temperature with ageing has also been studied. The Meyer-Neldel behavior of the manganite system stems from the multiexcitation entropy mechanism. The isokinetic temperature turned out to be a sensitive parameter characterizing changes in the transport properties of mixed valence manganites, which in the presence of a detailed theoretical model of the excitations coupling in manganites could become a powerful tool for the characterization and investigation of transport properties of manganites.

Original language	English
Article number	115159
Journal	Physical Review B
Volume	98
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevB.98.115159
State	Published - 28 Sep 2018

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.98.115159

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title = "Meyer-Neldel rule in the conductivity of manganite single crystals",

abstract = "The Meyer-Neldel behavior of conductivity of low-doped manganite La1-xCaxMnO3 single crystals has been investigated. The evolution of the isokinetic temperature of conductivity, modified by Ca-doping, hydrostatic pressure, and current bias has been determined. In addition, the evolution of isokinetic temperature with ageing has also been studied. The Meyer-Neldel behavior of the manganite system stems from the multiexcitation entropy mechanism. The isokinetic temperature turned out to be a sensitive parameter characterizing changes in the transport properties of mixed valence manganites, which in the presence of a detailed theoretical model of the excitations coupling in manganites could become a powerful tool for the characterization and investigation of transport properties of manganites.",

author = "J. Przybytek and V. Markovich and G. Jung",

note = "Funding Information: This work was supported by the Polish NCN Grant 2012/05/B/ST3/03157. The crystals used in the experiments were fabricated by J. Fink-Finowicki in the Institute of Physics, Polish Academy of Sciences in Warsaw and by Ya. Mukovskii in the Moscow State Steel and Alloys Institute. Funding Information: This work was supported by the Polish NCN Grant 2012/05/B/ST3/03157. The crystals used in the experiments were fabricated by J. Fink-Finowicki in the Institute of Physics, Polish Academy of Sciences in Warsaw and by Ya. Mukovskii in the Moscow State Steel and Alloys Institute. Publisher Copyright: {\textcopyright} 2018 American Physical Society.",

year = "2018",

month = sep,

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doi = "10.1103/PhysRevB.98.115159",

language = "English",

volume = "98",

journal = "Physical Review B",

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AU - Przybytek, J.

AU - Markovich, V.

AU - Jung, G.

N1 - Funding Information: This work was supported by the Polish NCN Grant 2012/05/B/ST3/03157. The crystals used in the experiments were fabricated by J. Fink-Finowicki in the Institute of Physics, Polish Academy of Sciences in Warsaw and by Ya. Mukovskii in the Moscow State Steel and Alloys Institute. Funding Information: This work was supported by the Polish NCN Grant 2012/05/B/ST3/03157. The crystals used in the experiments were fabricated by J. Fink-Finowicki in the Institute of Physics, Polish Academy of Sciences in Warsaw and by Ya. Mukovskii in the Moscow State Steel and Alloys Institute. Publisher Copyright: © 2018 American Physical Society.

PY - 2018/9/28

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N2 - The Meyer-Neldel behavior of conductivity of low-doped manganite La1-xCaxMnO3 single crystals has been investigated. The evolution of the isokinetic temperature of conductivity, modified by Ca-doping, hydrostatic pressure, and current bias has been determined. In addition, the evolution of isokinetic temperature with ageing has also been studied. The Meyer-Neldel behavior of the manganite system stems from the multiexcitation entropy mechanism. The isokinetic temperature turned out to be a sensitive parameter characterizing changes in the transport properties of mixed valence manganites, which in the presence of a detailed theoretical model of the excitations coupling in manganites could become a powerful tool for the characterization and investigation of transport properties of manganites.

AB - The Meyer-Neldel behavior of conductivity of low-doped manganite La1-xCaxMnO3 single crystals has been investigated. The evolution of the isokinetic temperature of conductivity, modified by Ca-doping, hydrostatic pressure, and current bias has been determined. In addition, the evolution of isokinetic temperature with ageing has also been studied. The Meyer-Neldel behavior of the manganite system stems from the multiexcitation entropy mechanism. The isokinetic temperature turned out to be a sensitive parameter characterizing changes in the transport properties of mixed valence manganites, which in the presence of a detailed theoretical model of the excitations coupling in manganites could become a powerful tool for the characterization and investigation of transport properties of manganites.

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DO - 10.1103/PhysRevB.98.115159

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ER -

Meyer-Neldel rule in the conductivity of manganite single crystals

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