Small-polaron hopping conduction in bilayer manganite (formula presented)

X. J. Chen; C. L. Zhang; C. C. Almasan; J. S. Gardner; J. L. Sarrao

doi:10.1103/PhysRevB.67.094426

Small-polaron hopping conduction in bilayer manganite (formula presented)

X. J. Chen, C. L. Zhang, C. C. Almasan, J. S. Gardner, J. L. Sarrao

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Abstract

We report anisotropic resistivity measurements on a (formula presented) single crystal over a temperature T range from 2 to 400 K and in magnetic-fields H up to 14 T. For (formula presented) the temperature dependence of the zero-field in-plane resistivity (formula presented) obeys the adiabatic small polaron hopping mechanism, while the out-of-plane resistivity (formula presented) can be ascribed by an Arrhenius law with the same activation energy. Considering the magnetic character of the polarons and the close correlation between resistivity and magnetization, we developed a model which allows the determination of (formula presented) The excellent agreement of the calculations with the measurements indicates that small polarons play an essential role in the electrical transport properties in the paramagnetic phase of bilayer manganites.

Original language	English
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	67
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevB.67.094426
State	Published - Mar 27 2003
Externally published	Yes

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title = "Small-polaron hopping conduction in bilayer manganite (formula presented)",

abstract = "We report anisotropic resistivity measurements on a (formula presented) single crystal over a temperature T range from 2 to 400 K and in magnetic-fields H up to 14 T. For (formula presented) the temperature dependence of the zero-field in-plane resistivity (formula presented) obeys the adiabatic small polaron hopping mechanism, while the out-of-plane resistivity (formula presented) can be ascribed by an Arrhenius law with the same activation energy. Considering the magnetic character of the polarons and the close correlation between resistivity and magnetization, we developed a model which allows the determination of (formula presented) The excellent agreement of the calculations with the measurements indicates that small polarons play an essential role in the electrical transport properties in the paramagnetic phase of bilayer manganites.",

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T1 - Small-polaron hopping conduction in bilayer manganite (formula presented)

AU - Chen, X. J.

AU - Zhang, C. L.

AU - Almasan, C. C.

AU - Gardner, J. S.

AU - Sarrao, J. L.

PY - 2003/3/27

Y1 - 2003/3/27

N2 - We report anisotropic resistivity measurements on a (formula presented) single crystal over a temperature T range from 2 to 400 K and in magnetic-fields H up to 14 T. For (formula presented) the temperature dependence of the zero-field in-plane resistivity (formula presented) obeys the adiabatic small polaron hopping mechanism, while the out-of-plane resistivity (formula presented) can be ascribed by an Arrhenius law with the same activation energy. Considering the magnetic character of the polarons and the close correlation between resistivity and magnetization, we developed a model which allows the determination of (formula presented) The excellent agreement of the calculations with the measurements indicates that small polarons play an essential role in the electrical transport properties in the paramagnetic phase of bilayer manganites.

AB - We report anisotropic resistivity measurements on a (formula presented) single crystal over a temperature T range from 2 to 400 K and in magnetic-fields H up to 14 T. For (formula presented) the temperature dependence of the zero-field in-plane resistivity (formula presented) obeys the adiabatic small polaron hopping mechanism, while the out-of-plane resistivity (formula presented) can be ascribed by an Arrhenius law with the same activation energy. Considering the magnetic character of the polarons and the close correlation between resistivity and magnetization, we developed a model which allows the determination of (formula presented) The excellent agreement of the calculations with the measurements indicates that small polarons play an essential role in the electrical transport properties in the paramagnetic phase of bilayer manganites.

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DO - 10.1103/PhysRevB.67.094426

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VL - 67

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 9

ER -

Small-polaron hopping conduction in bilayer manganite (formula presented)

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