Transport properties of the Mo3Sb7 compound

作     者：C. Candolfi B. Lenoir A. Dauscher E. Guilmeau J. Hejtmanek J. Tobola B. Wiendlocha S. Kaprzyk 

作者机构：Faculty of Physics and Applied Computer Science AGH University of Science and Technology 30-059 Krakow Poland 

出 版 物：《Physical Review B》 (Phys. Rev. B Condens. Matter Mater. Phys.)

年 卷 期：2009年第79卷第3期

页      面：035114-035114页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Polish Ministry of Science and Higher Education [N202-2104-33] 

主　　题：electrical resistivity Hall effect semiconductor materials thermal conductivity thermoelectricity 

摘      要：The galvanomagnetic and thermoelectric properties including Hall effect, electrical resistivity, thermopower, and thermal conductivity have been studied for polycrystalline Mo3Sb7. The temperature dependences of the various physical properties, measured from 2 up to 800 K, was explained supposing an important role of magnetic fluctuations significantly suppressed by the opening of a gap in the spin excitation spectrum. In addition, we propose that magnetic excitations are likely responsible for the exotic temperature dependence of the thermal conductivity in the whole temperature range. The high value of the dimensionless figure of merit ZT achieved at high temperature classifies this p-type metal as one of the best thermoelectric metal discovered up to now.