2017/03/22 by K. Nakayama, M. Kuno, Kunihiko Yamauchi +7
Chemistry · Engineering · Physics and Astronomy · #Advanced Semiconductor Detectors and Materials #Angle-resolved photoemission spectroscopy #Brillouin zone #Chemistry #Condensed matter physics #Crystal (programming language) #Crystal structure #Crystallography #Density functional theory #Electronic band structure #Electronic structure #Materials science #Nuclear magnetic resonance #Photoemission spectroscopy #Physics #Quantum mechanics #Tellurium #Terahertz technology and applications #Topological Materials and Phenomena #Trigonal crystal system #X-ray photoelectron spectroscopy #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.95.125204
published as Phys. Rev. B 95, 125204 (2017) · 6 pages, 3 figures
openalex publication_date 2017/03/22 · arxiv created 2017/03/29 · arxiv updated 2017/03/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We have performed high-resolution angle-resolved photoemission spectroscopy (ARPES) on trigonal tellurium consisting of helical chains in the crystal. Through the band-structure mapping in the three-dimensional Brillouin zone, we found a definitive evidence for the band splitting originating from the chiral nature of crystal. A direct comparison of the band dispersion between the ARPES results and the first-principles band-structure calculations suggests the presence of Weyl nodes and tiny spin-polarized hole pockets around the H point. The present result opens a pathway toward studying the interplay among crystal symmetry, band structure, and exotic physical properties in chiral crystals.