Topological semimetal state and field-induced Fermi surface reconstruction in the antiferromagnetic monopnictide NdSb
Topological semimetal state and field-induced Fermi surface reconstruction in the antiferromagnetic monopnictide NdSb
复制标题
反铁磁单光子晶体 NdSb 中的拓扑半金属态和场致费米面重构
DOI：
10.1103/physrevb.97.115133
复制
发表时间：
2018
影响因子：
3.7
通讯作者：
Zhang Yuheng
中科院分区：
文献类型：
--
作者：
Wang Yongjian;Yu J. H.;Wang Y. Q.;Xi C. Y.;Ling L. S.;Zhang S. L.;Wang J. R.;Xiong Y. M.;Han Tao;Han Hui;Yang Jun;Gong Jixiang;Luo Lei;Tong W.;Zhang Lei;Qu Zhe;Han Y. Y.;Zhu W. K.;Pi Li;Wan X. G.;Zhang Changjin;Zhang Yuheng
报道了在反铁磁基态材料NdSb中实现狄拉克半金属态的实验。我们的能带结构计算和手征反常引起的负磁电阻的实验观察都很好地支持了拓扑半金属态的出现。观察到自旋极化改变引起的场致费米面重构。磁性材料中拓扑半金属态的观测为研究磁拓扑现象提供了机会。
We report the experimental realization of a Dirac semimetal state in NdSb, a material with antiferromagnetic ground state. The occurrence of a topological semimetal state has been well supported by our band structure calculations and the experimental observation of chiral-anomaly-induced negative magnetoresistance. A field-induced Fermi surface reconstruction is observed in response to the change of spin polarization. The observation of a topological semimetal state in a magnetic material provides an opportunity to investigate the magnetotopological phenomena.