Band splitting and Weyl nodes in trigonal tellurium studied by angle-resolved photoemission spectroscopy and density functional theory
arXiv:1703.01136 · doi:10.1103/PhysRevB.95.125204
Abstract
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.
arXiv comment6 pages, 3 figures
References in corpus (20)
- Topological Insulators
- Topological insulators and superconductors
- Anomalous Hall effect
- Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs
- Discovery of a Three-dimensional Topological Dirac Semimetal, Na3Bi
- Topological Insulator Materials
- Observation of a topological 3D Dirac semimetal phase in high-mobility Cd3As2
- Experimental Realization of a Three-Dimensional Dirac Semimetal
- Phase transition between the quantum spin Hall and insulator phases in 3D: emergence of a topological gapless phase
- Observation of Weyl nodes in TaAs
- Dirac Cone Protected by Non-Symmorphic Symmetry and 3D Dirac Line Node in ZrSiS
- Hourglass Fermions
- Observation of Topological Nodal Fermion Semimetal Phase in ZrSiS
- Weyl Node and Spin Texture in Trigonal Tellurium and Selenium
- Unexpected Dirac-Node Arc in the Topological Line-Node Semimetal HfSiS
- Two-Dimensional Oxide Topological Insulator With Iron-Pnictide Superconductor LiFeAs Structure
- Current-induced Orbital and Spin Magnetizations in Crystals with Helical Structure
- Topological crystalline semimetals in non-symmorphic lattices
- Circular photon drag effect in bulk tellurium
- Current-Induced Spin Polarization in Gallium Nitride
Cited by in corpus (28)
- Radial spin texture in elemental tellurium with chiral crystal structure
- Thermoelectric Performance of 2D Tellurium with Accumulation Contacts
- Quantum Hall Effect of Weyl Fermions in Semiconducting n-type Tellurene
- Composite Weyl nodes stabilized by screw symmetry with and without time reversal
- Strong electrical magneto-chiral anisotropy in tellurium
- Chirality-Induced Electrical Generation of Magnetism in Nonmagnetic Elemental Tellurium
- Quantum Transport and Band Structure Evolution under High Magnetic Field in Few-Layer Tellurene
- Ultrafast Photoinduced Band Splitting and Carrier Dynamics in Chiral Tellurium Nanosheets
- Pressure-induced topological phase transition in noncentrosymmetric elemental Tellurium
- Large Second-Harmonic Generation and Linear Electro-Optic Effect in Trigonal Selenium and Tellurium
- Pancharatnam-Berry phase and kinetic magnetoelectric effect in a three-dimensional helical crystal (Te)
- Gate-tunable Strong Spin-orbit Interaction in Two-dimensional Tellurium Probed by Weak-antilocalization
- Long-range current-induced spin accumulation in chiral crystals
- Observation of band crossings protected by nonsymmorphic symmetry in the layered ternary telluride Ta3SiTe6
- Directional massless Dirac fermions in a layered van der Waals material with one-dimensional long-range order
- Symmetry-enforced band crossings in trigonal materials: Accordion states and Weyl nodal lines
- Two linear regimes in optical conductivity of a Type-I Weyl semimetal: the case of elemental tellurium
- Optoelectronic manifestation of orbital angular momentum driven by chiral hopping in helical Se chains
- A light-induced Weyl semiconductor-to-metal transition mediated by Peierls instability
- Magneto-transport properties of tellurium under extreme conditions
- Chiral vortical effect in relativistic and nonrelativistic systems
- Intrinsic two-dimensional state on the pristine surface of tellurium
- Optical signatures of phase transitions and structural modulation in elemental tellurium under pressure
- Intrinsic Orbital Origin for the Chirality-Dependent Nonlinear Planar Hall Effect of Topological Nodal Fermions in Chiral Crystals
- Chirality-tunable non-linear Hall effect
- Light-induced renormalization of the band structure of chiral tellurium
- Topological superconductivity in helical crystals
- Growth and Strain Engineering of Trigonal Te for Topological Quantum Phases in Non-Symmorphic Chiral Crystals