Thermoelectric power and transport properties of Mg1-xAlxB2

B. Lorenz; R. L. Meng; Y. Y. Xue; C. W. Chu

Thermoelectric power and transport properties of Mg_1-xAl_xB₂

B. Lorenz, R. L. Meng, Y. Y. Xue, C. W. Chu

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Abstract

We have measured the thermoelectric power S and resistivity ρ of Mg_1-xAl_xB₂. S is positive and increases linearly with temperature above the superconducting transition temperature T_c. Deviations from the linear dependence appear at higher temperature, T> T₀≈ 160 K. T_c and T_o both decrease with Al doping whereas the slope of S(T) in the linear range increases with the Al content. The data are discussed in terms of doping-induced changes of the Fermi surface and the density of states at the Fermi level.

Original language	English
Article number	052513
Pages (from-to)	525131-525134
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	64
Issue number	5
Publication status	Published - 2001 Aug 1

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

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abstract = "We have measured the thermoelectric power S and resistivity ρ of Mg1-xAlxB2. S is positive and increases linearly with temperature above the superconducting transition temperature Tc. Deviations from the linear dependence appear at higher temperature, T> T0≈ 160 K. Tc and To both decrease with Al doping whereas the slope of S(T) in the linear range increases with the Al content. The data are discussed in terms of doping-induced changes of the Fermi surface and the density of states at the Fermi level.",

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T1 - Thermoelectric power and transport properties of Mg1-xAlxB2

AU - Lorenz, B.

AU - Meng, R. L.

AU - Xue, Y. Y.

AU - Chu, C. W.

PY - 2001/8/1

Y1 - 2001/8/1

N2 - We have measured the thermoelectric power S and resistivity ρ of Mg1-xAlxB2. S is positive and increases linearly with temperature above the superconducting transition temperature Tc. Deviations from the linear dependence appear at higher temperature, T> T0≈ 160 K. Tc and To both decrease with Al doping whereas the slope of S(T) in the linear range increases with the Al content. The data are discussed in terms of doping-induced changes of the Fermi surface and the density of states at the Fermi level.

AB - We have measured the thermoelectric power S and resistivity ρ of Mg1-xAlxB2. S is positive and increases linearly with temperature above the superconducting transition temperature Tc. Deviations from the linear dependence appear at higher temperature, T> T0≈ 160 K. Tc and To both decrease with Al doping whereas the slope of S(T) in the linear range increases with the Al content. The data are discussed in terms of doping-induced changes of the Fermi surface and the density of states at the Fermi level.

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M3 - Article

AN - SCOPUS:0035424598

SN - 0163-1829

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JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 5

M1 - 052513

ER -

Thermoelectric power and transport properties of Mg_1-xAl_xB₂

Abstract

All Science Journal Classification (ASJC) codes

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