ElectronicstructureofcorrelatedtopologicalinsulatorcandidateYbB6studiedbyphotoemissionandquantumoscillation

被引：0

作者：

张腾 ^{[1
]}

李岗 ^{[2
,3
]}

孙淑翠 ^{[1
]}

秦娜 ^{[1
]}

康璐 ^{[1
]}

姚淑华 ^{[4
]}

翁红明 ^{[3
,5
,6
,7
,8
]}

S K Mo ^{[9
]}

李璐 ^{[2
]}

柳仲楷 ^{[10
,11
]}

杨乐仙 ^{[1
,12
]}

陈宇林 ^{[1
,10
,11
,13
]}

机构：

[1] State Key Laboratory of Low Dimensional Quantum Physics,Department of Physics,Tsinghua University

[2] Department of Physics,University of Michigan

[3] Beijing National Laboratory for Condensed Matter Physics and Institute of Physics,Chinese Academy of Sciences

[4] National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering,Nanjing University

[5] Collaborative Innovation Center of Quantum Matter

[6] Songshan Lake Materials Laboratory

[7] CAS Center for Excellence in Topological Quantum Computation

[8] Physical Science Laboratory,Huairou National Comprehensive Science Center

[9] Advanced Light Source,Lawrence Berkeley National Laboratory

[10] School of Physical Science and Technology,Shanghai Tech University and CAS-Shanghai Science Research Center

[11] Shanghai Tech Laboratory for Topological Physics

[12] Frontier Science Center for Quantum Information

[13] Department of Physics,Clarendon Laboratory,University of Oxford Parks Road

来源：

Chinese Physics B | 2020年 / 01期

关键词：

topological insulator; electronic structure; surface states;

D O I：

暂无

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Angle-resolved photoemission spectroscopy（ARPES） and torque magnetometry（TM） measurements have been carried out to study the electronic structures of a correlated topological insulator（TI） candidate Yb B6. We observed clear surface states on the [001] surface centered at the ■ and ■ points of the surface Brillouin zone. Interestingly, the fermiology revealed by the quantum oscillation of TM measurements agrees excellently with ARPES measurements. Moreover,the band structures we observed suggest that the band inversion in Yb B6 happens between the Yb5 dand B2bands, instead of the Yb5dand Yb4fbands as suggested by previous theoretical investigation, which will help settle the heavy debate regarding the topological nature of samarium/ytterbium hexaborides.

引用

页码：86 / 91

页数：6