Thermoelectric power of hole-doped manganites:: La2-2xSr1+2xMn2O7 (0.3≤x≤0.5) -: art. no. 092407

被引：9
|
作者：
Nakamae, S [1 ]
Colson, D
Forget, A
Legros, I
Marucco, JF
Ayache, C
Ocio, M
机构：
[1] CEA Saclay, Serv Phys Etat Condense, F-91191 Gif Sur Yvette, France
[2] Univ Paris Sud, Lab Etud Mat Hors Equilibre, Orsay, France
来源：
PHYSICAL REVIEW B | 2001年 / 63卷 / 09期
关键词：
D O I：
10.1103/PhysRevB.63.092407
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have investigated the hole doping effect on the thermoelectric power (S) of double layered manganites, La2 - 2xSr1 + 2xMn2O7, with nominal hole concentrations of x = 0.3, 0.4, and 0.5. A systematic change in the values of thermoelectric power was observed in the high-temperature range where samples were found to be paramagnetic and insulating. At low temperatures, not only the magnitude of S but also its temperature and magnetic-field dependency was found strongly influenced by a variation in x, reflecting the changes in their magnetic structures and the consequential charge-spin and charge-orbit coupling effects.
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页数：4
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