Transport properties of La1.85-xSr0.15+x Cu1-xMxOy (M=Co,Ga)

Xu Gaojie; Zhiqiang Mao; Jin Hao; Yan Hongjie; Wang Bin; Liu Dengpan; Zhang Yuheng

Transport properties of La_1.85-xSr_0.15+x Cu_1-xM_xO_y (M=Co,Ga)

Xu Gaojie, Zhiqiang Mao, Jin Hao, Yan Hongjie, Wang Bin, Liu Dengpan, Zhang Yuheng

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12 Citations (SciVal)

Abstract

The transport properties of double doped samples La_1.85-xSr_0.15+xCu_1-xCo_xO _y, (0≤x≤1.0) are investigated by means of resistivity and thermoelectric power (TEP). It is found that with Co doping, the lattice parameter a increases first and then decreases as x≥0.6, where the resistivity and thermoelectric power exhibit a corresponding anomaly. Analyzing the discrepancy of the thermal activation energy derived from the resistivity and TEP, we find that the transport mechanism can be understood in terms of the polaron model. The corresponding Ga doped system is also analyzed as a comparison. Another interesting phenomenon is the different change of the broad peaks in S-T curves between Co and Ga doped systems, which is discussed according to the change of spin correlation.

Original language	English (US)
Pages (from-to)	12090-12094
Number of pages	5
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	59
Issue number	18
State	Published - May 1 1999

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

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title = "Transport properties of La1.85-xSr0.15+x Cu1-xMxOy (M=Co,Ga)",

abstract = "The transport properties of double doped samples La1.85-xSr0.15+xCu1-xCoxO y, (0≤x≤1.0) are investigated by means of resistivity and thermoelectric power (TEP). It is found that with Co doping, the lattice parameter a increases first and then decreases as x≥0.6, where the resistivity and thermoelectric power exhibit a corresponding anomaly. Analyzing the discrepancy of the thermal activation energy derived from the resistivity and TEP, we find that the transport mechanism can be understood in terms of the polaron model. The corresponding Ga doped system is also analyzed as a comparison. Another interesting phenomenon is the different change of the broad peaks in S-T curves between Co and Ga doped systems, which is discussed according to the change of spin correlation.",

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T1 - Transport properties of La1.85-xSr0.15+x Cu1-xMxOy (M=Co,Ga)

AU - Gaojie, Xu

AU - Mao, Zhiqiang

AU - Hao, Jin

AU - Hongjie, Yan

AU - Bin, Wang

AU - Dengpan, Liu

AU - Yuheng, Zhang

PY - 1999/5/1

Y1 - 1999/5/1

N2 - The transport properties of double doped samples La1.85-xSr0.15+xCu1-xCoxO y, (0≤x≤1.0) are investigated by means of resistivity and thermoelectric power (TEP). It is found that with Co doping, the lattice parameter a increases first and then decreases as x≥0.6, where the resistivity and thermoelectric power exhibit a corresponding anomaly. Analyzing the discrepancy of the thermal activation energy derived from the resistivity and TEP, we find that the transport mechanism can be understood in terms of the polaron model. The corresponding Ga doped system is also analyzed as a comparison. Another interesting phenomenon is the different change of the broad peaks in S-T curves between Co and Ga doped systems, which is discussed according to the change of spin correlation.

AB - The transport properties of double doped samples La1.85-xSr0.15+xCu1-xCoxO y, (0≤x≤1.0) are investigated by means of resistivity and thermoelectric power (TEP). It is found that with Co doping, the lattice parameter a increases first and then decreases as x≥0.6, where the resistivity and thermoelectric power exhibit a corresponding anomaly. Analyzing the discrepancy of the thermal activation energy derived from the resistivity and TEP, we find that the transport mechanism can be understood in terms of the polaron model. The corresponding Ga doped system is also analyzed as a comparison. Another interesting phenomenon is the different change of the broad peaks in S-T curves between Co and Ga doped systems, which is discussed according to the change of spin correlation.

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ER -

Transport properties of La_1.85-xSr_0.15+x Cu_1-xM_xO_y (M=Co,Ga)

Abstract

All Science Journal Classification (ASJC) codes

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