@article{29a0e76550834d0ca768b0959a39268f,
title = "Observation of band crossings protected by nonsymmorphic symmetry in the layered ternary telluride Ta3SiTe6",
abstract = "We have performed angle-resolved photoemission spectroscopy of the layered ternary telluride Ta3SiTe6 which is predicted to host nodal lines associated with nonsymmorphic crystal symmetry. We found that the energy bands in the valence-band region show Dirac-like dispersions which present a band degeneracy at the R point of the bulk orthorhombic Brillouin zone. This band degeneracy extends one dimensionally along the whole SR high-symmetry line, forming nodal lines protected by the glide mirror symmetry of the crystal. We also observed a small band splitting near EF which supports the existence of hourglass-type dispersions predicted by the calculation. The present results provide an excellent opportunity to investigate the interplay between exotic nodal fermions and nonsymmorphic crystal symmetry.",
author = "Takafumi Sato and Zhiwei Wang and Kosuke Nakayama and Seigo Souma and Daichi Takane and Yuki Nakata and Hideaki Iwasawa and Cephise Cacho and Timur Kim and Takashi Takahashi and Yoichi Ando",
note = "Funding Information: We thank K. Nakamura, H. Oinuma, K. Shigekawa, K. Hori, K. Horiba, and H. Kumigashira for their assistance in the ARPES measurements. We also thank Diamond Light Source for access to beamline I05 (Proposal No. S18839). This work was supported by MEXT of Japan (Innovative Area “Topological Materials Science,” JP15H05853), JSPS (KAKENHI No. JP17H01139, No. JP26287071, No. JP25220708, No. JP16K13664, No. JP16K17725, and No. JP18H01160), KEK-PF (Proposal No. 2018S2-001, No. 2016G-555), and DFG (CRC1238 “Control and Dynamics of Quantum Materials,” Project A04). Publisher Copyright: {\textcopyright} 2018 American Physical Society.",
year = "2018",
month = sep,
day = "26",
doi = "10.1103/PhysRevB.98.121111",
language = "English",
volume = "98",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "12",
}