Takane, D., Wang, Zhiwei ORCID: 0000-0003-0182-2471, Souma, S., Nakayama, K., Trang, C. X., Sato, T., Takahashi, T. and Ando, Yoichi ORCID: 0000-0002-3553-3355 (2016). Dirac-node arc in the topological line-node semimetal HfSiS. Phys. Rev. B, 94 (12). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

Full text not available from this repository.

Abstract

We have performed angle-resolved photoemission spectroscopy on HfSiS, which has been predicted to be a topological line-node semimetal with square Si lattice. We found a quasi-two-dimensional Fermi surface hosting bulk nodal lines, alongside the surface states at the Brillouin-zone corner exhibiting a sizable Rashba splitting and band-mass renormalization due to many-body interactions. Most notably, we discovered an unexpected Dirac-like dispersion extending one dimensionally in k space-the Dirac-node arc-near the bulk node at the zone diagonal. These novel Dirac states reside on the surface and could be related to hybridizations of bulk states, but currently we have no explanation for its origin. This discovery poses an intriguing challenge to the theoretical understanding of topological line-node semimetals.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Takane, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wang, ZhiweiUNSPECIFIEDorcid.org/0000-0003-0182-2471UNSPECIFIED
Souma, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nakayama, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Trang, C. X.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sato, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Takahashi, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ando, YoichiUNSPECIFIEDorcid.org/0000-0002-3553-3355UNSPECIFIED
URN: urn:nbn:de:hbz:38-262493
DOI: 10.1103/PhysRevB.94.121108
Journal or Publication Title: Phys. Rev. B
Volume: 94
Number: 12
Date: 2016
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 2469-9969
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
WEYL FERMION SEMIMETAL; CRYSTALLINE INSULATOR; SURFACE; PHASE; TRANSITION; DISCOVERY; TAAS; SNTEMultiple languages
Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed MatterMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/26249

Downloads

Downloads per month over past year

Altmetric

Export

Actions (login required)

View Item View Item