Hall effect, thermopower and electrical resistivity of doped RuSr 2GdCu2O8 system

G. Ilonca; F. Beiusan; A. V. Pop; I. Matei; E. Macocian; T. R. Yang

doi:10.1142/S0217979204026275

Hall effect, thermopower and electrical resistivity of doped RuSr ₂GdCu₂O₈ system

G. Ilonca^*, F. Beiusan, A. V. Pop, I. Matei, E. Macocian, T. R. Yang

^*Corresponding author for this work

Department of Physics

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

2 Citations (Scopus)

Abstract

Polycrystalline samples of Ru_1-xSb_xSr ₂GdCuO₈ doped with Sb, in which magnetic order and superconductivity coexist with T_magnetic ≫ TC, were prepared by a solid state reaction technique. Lattice parameters, electrical resistivity, Hall and thermopower coefficients measurements on the same sintered ceramic samples are presented. Both Hall effect and thermopower show anomalous decreases below T_magnetic which might be explained with a simple two-band model in the RuO₂ layer at T_magnetic. It was also observed that the Sb doping reduce the conductivity of the system and the transition temperature decreases with increasing Sb content. This may be due to a distortion of RuO₆ octahedra which is responsible for the increase of hole localization.

Original language	English
Pages (from-to)	3057-3062
Number of pages	6
Journal	International Journal of Modern Physics B
Volume	18
Issue number	22
DOIs	https://doi.org/10.1142/S0217979204026275
Publication status	Published - 2004 Sept 20

Keywords

Hall effect
Resistivity
Superconductivity
Thermopower

ASJC Scopus subject areas

Statistical and Nonlinear Physics
Condensed Matter Physics

Access to Document

10.1142/S0217979204026275

Cite this

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title = "Hall effect, thermopower and electrical resistivity of doped RuSr 2GdCu2O8 system",

abstract = "Polycrystalline samples of Ru1-xSbxSr 2GdCuO8 doped with Sb, in which magnetic order and superconductivity coexist with Tmagnetic ≫ TC, were prepared by a solid state reaction technique. Lattice parameters, electrical resistivity, Hall and thermopower coefficients measurements on the same sintered ceramic samples are presented. Both Hall effect and thermopower show anomalous decreases below Tmagnetic which might be explained with a simple two-band model in the RuO2 layer at Tmagnetic. It was also observed that the Sb doping reduce the conductivity of the system and the transition temperature decreases with increasing Sb content. This may be due to a distortion of RuO6 octahedra which is responsible for the increase of hole localization.",

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T1 - Hall effect, thermopower and electrical resistivity of doped RuSr 2GdCu2O8 system

AU - Ilonca, G.

AU - Beiusan, F.

AU - Pop, A. V.

AU - Matei, I.

AU - Macocian, E.

AU - Yang, T. R.

PY - 2004/9/20

Y1 - 2004/9/20

N2 - Polycrystalline samples of Ru1-xSbxSr 2GdCuO8 doped with Sb, in which magnetic order and superconductivity coexist with Tmagnetic ≫ TC, were prepared by a solid state reaction technique. Lattice parameters, electrical resistivity, Hall and thermopower coefficients measurements on the same sintered ceramic samples are presented. Both Hall effect and thermopower show anomalous decreases below Tmagnetic which might be explained with a simple two-band model in the RuO2 layer at Tmagnetic. It was also observed that the Sb doping reduce the conductivity of the system and the transition temperature decreases with increasing Sb content. This may be due to a distortion of RuO6 octahedra which is responsible for the increase of hole localization.

AB - Polycrystalline samples of Ru1-xSbxSr 2GdCuO8 doped with Sb, in which magnetic order and superconductivity coexist with Tmagnetic ≫ TC, were prepared by a solid state reaction technique. Lattice parameters, electrical resistivity, Hall and thermopower coefficients measurements on the same sintered ceramic samples are presented. Both Hall effect and thermopower show anomalous decreases below Tmagnetic which might be explained with a simple two-band model in the RuO2 layer at Tmagnetic. It was also observed that the Sb doping reduce the conductivity of the system and the transition temperature decreases with increasing Sb content. This may be due to a distortion of RuO6 octahedra which is responsible for the increase of hole localization.

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KW - Resistivity

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KW - Thermopower

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