CeSb单晶的电磁性质研究

Magnetic and Electrical of CeSb Single Crystal

稀土磷族化合物被认为是潜在的拓扑量子材料.本文以CeSb为研究对象,开展磁化率和电阻率的温度、磁场和角度依赖性研究.研究发现低温CeSb具有多个磁性相,在磁场作用下表现出反铁磁-铁磁转变以及补偿型磁电阻行为和磁电阻平台特征.另外,相比于非磁性和Gd基姊妹化合物,CeSb的低温转角磁电阻在(2n+1)/4(n=0,1,3,4)处出现极小值,表明该体系中磁性与电输运性质相互耦合.研究结果有助于深入理解稀土磷族化合物的磁电输运性质以及电子结构特征.

Rare earth phosphorous compounds are believed as potential topological quantum materials.With CeSb as the object of research in this paper,we study its temperature,magnetic-field-and angle-dependent magnetization and resistivity.Researches show that low temperature CeSb manifests multiple magnetic states,magnetic-fieldinduced meta-magnetic behaviors,extreme magnetoresistance,and resistivity plateaus.Besides,different to other nonmagnetic and Gd-based sister compounds,CeSb’s angular magnetoresistance exhibits minima at(2n+1)/4 with n=0,1,3,4,which suggests that the conduction electrons closely couple with magnetism,and could provide a paradigm for studying the magnetotransport and electronic features in other rare-earth monopnictides.