当前位置: X-MOL 学术Phys. Rev. Lett. › 论文详情
Photoemission spectroscopic evidence for the Dirac nodal line in monoclinic semimetal SrAs3
Physical Review Letters ( IF 8.385 ) Pub Date : 
Y. K. Song, G. W. Wang, S. C. Li, W. L. Liu, X. L. Lu, Z. T. Liu, Z. J. Li, J. S. Wen, Z. P. Yin, Z. H. Liu, and D. W. Shen

Topological nodal-line semimetals with exotic quantum properties are characterized by symmetry-protected line-contact bulk band-crossings in the momentum space. However, in most of identified topological nodal-line compounds, these topological non-trivial nodal lines are enclosed by complicated topological trivial states at the Fermi energy (EF), which would perplex their identification and hinder further applications. Utilizing angle-resolved photoemission spectroscopy and first-principles calculations, we provide compelling evidence for the existence of Dirac nodal-line fermions in the monoclinic semimetal SrAs3, which possesses a simple nodal loop in the vicinity of EF without the distraction from complicated trivial Fermi surfaces. Our calculations revealed that two bands with opposite parities were inverted around near EF, resulting in the single nodal loop at the Γ-- plane with a negligible spin-orbit coupling effect. The band crossings were tracked experimentally and the complete nodal loop was identified quantitatively, which provide a critical experimental support for the existence of nodal-line fermions in the CaP3 family of materials. Hosting simple topological non-trivial bulk electronic states around EF and without complication from the trivial states, SrAs3 is expected to be a potential platform for topological quantum state investigation and applications.
更新日期:2020-01-13

 

全部期刊列表>>
施普林格自然
最近合集,配们化学
欢迎访问IOP中国网站
GIANT
自然职场线上招聘会
ACS ES&T Engineering
ACS ES&T Water
屿渡论文,编辑服务
何川
苏昭铭
陈刚
姜涛
李闯创
复旦大学
刘立明
隐藏1h前已浏览文章
课题组网站
新版X-MOL期刊搜索和高级搜索功能介绍
ACS材料视界
天合科研
x-mol收录
上海纽约大学
曾林
天津大学
何振宇
史大永
吉林大学
卓春祥
张昊
刘冬生
试剂库存
down
wechat
bug