The observation of a positive magnetoresistance and close correlation among lattice, spin, and charge around TC in antipervoskite SnCMn3
The observation of a positive magnetoresistance and close correlation among lattice, spin, and charge around TC in antipervoskite SnCMn3
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DOI：
10.1063/1.3159037
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发表时间：
2009-06
影响因子：
3.2
通讯作者：
B. Wang;P. Tong;Y. Sun;X. B. Zhu;W. Song;Z. R. Yang;J. Dai
中科院分区：
文献类型：
--
作者：
B. Wang;P. Tong;Y. Sun;X. B. Zhu;W. Song;Z. R. Yang;J. Dai
The temperature dependences of magnetization, electrical transport, and thermal transport properties of antiperovskite compound SnCMn3 have been investigated systematically. A positive magnetoresistance (∼11%) is observed around the ferrimagnetic-paramagnetic transition (TC∼280 K) in the field of 50 kOe, which can be attributed to the field-induced magnetic phase transition. The abnormalities of resistivity, Seebeck coefficient, normal Hall effect, and thermal conductivity near TC are suggested to be associated with an abrupt reconstruction of electronic structure. Further, our results indicate an essential interaction among lattice, spin, and charge degrees of freedom around TC. Such an interaction among various degrees of freedom associated with sudden phase transition is suggested to be characteristic of Mn-based antiperovskite compounds.
