Thermoelectric properties of electron- and hole-doped BaFe2As2

被引：15
|
作者：
Yan, Y. J.
Wang, X. F.
Liu, R. H.
Chen, H.
Xie, Y. L.
Ying, J. J.
Chen, X. H. [1 ]
机构：
[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China
来源：
PHYSICAL REVIEW B | 2010年 / 81卷 / 23期
关键词：
SPIN-DENSITY-WAVE; ALLOYS; SUPERCONDUCTIVITY; THERMOPOWER; TRANSITION; STATE; POWER;
D O I：
10.1103/PhysRevB.81.235107
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We investigate the resistivity and thermoelectric power properties for Co- or K-doped BaFe2As2 systems. T-c as a function of Co- or K-doping level exhibits a domelike behavior in both of the systems. The thermoelectric power (S) at room temperature as a function of doping level (x) shows a domelike behavior in Ba1-xKxFe2As2 system while monotonously decreases in BaFe2-xCoxAs2 system. It is intriguing that the superconducting samples simultaneously show large absolute values of thermoelectric power and good conductivity. The power factor shows a peak at low temperature, suggesting possible applications in thermoelectric cooling modules around the liquid-nitrogen temperature range.
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页数：5
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