Transition from semiconducting to metallic-like conducting and weak antilocalization effect in single crystals of LuPtSb
Transition from semiconducting to metallic-like conducting and weak antilocalization effect in single crystals of LuPtSb
复制标题
LuPtSb单晶从半导体到类金属导电的转变和弱反定域效应
DOI:
10.1063/1.4914545
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发表时间:
2015-01
影响因子:
4
通讯作者:
Guangheng Wu
中科院分区:
文献类型:
--
作者:
Zhipeng Hou;Yue Wang;Guizhou Xu;Xiaoming Zhang;Enke Liu;Wenquan Wang;Zhongyuan Liu;Xuekui Xi;Wenhong Wang;Guangheng Wu
High quality half-Heusler single crystals of LuPtSb have been synthesized by a Pb flux method. The temperature dependent resistivity and Hall effects indicate that the LuPtSb crystal is a p-type gapless semiconductor showing a transition from semiconducting to metallic conducting at 150 K. Moreover, a weakly temperature-dependent positive magnetoresistance (MR) as large as 109 % and high carrier mobility up to 2950 cm2/Vs are experimentally observed at temperatures below 150 K. The low-field MR data shows evidence for weak antilocalization (WAL) effect at temperatures even up to 150 K. Analysis of the temperature and angle dependent magnetoconductance manifests that the WAL effect originates from the bulk contribution owing to the strong spin-orbital coupling.
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