期刊论文详细信息
Observation of Dirac-like band dispersion in LaAgSb2 | |
Article | |
关键词: ELECTRONIC-STRUCTURE; RAGSB2 R; LA-ND; GD; SM; | |
DOI : 10.1103/PhysRevB.93.081105 | |
来源: SCIE |
【 摘 要 】
We present a combined angle-resolved photoemission spectroscopy (ARPES) and first-principles calculations study of the electronic structure of LaAgSb2 in the entire first Brillouin zone. We observe a Dirac-cone-like structure in the vicinity of the Fermi level formed by the crossing of two linear energy bands, as well as the nested segments of a Fermi surface pocket emerging from the cone. Our ARPES results show the close relationship of the Dirac cone to the charge-density-wave ordering, providing consistent explanations for exotic behaviors in this material.
【 授权许可】
Free