Electronic Structure Examination on the Topological Properties of CaMnSb by Angle-Resolved Photoemission Spectroscopy
arXiv:2105.00444 · doi:10.1103/PhysRevB.103.245104
Abstract
We have carried out detailed high resolution ARPES measurements and band structure calculations to study the electronic structure of CaMnSb. The observed Fermi surface mainly consists of one hole pocket around point and one tiny hole pocket at Y point. Strong spectral weight accumulation along the -X direction is observed on the hole-like Fermi surface around point, suggesting strong anisotropy of the density of states along the Fermi surface. The tiny hole pocket at Y point originates from an anisotropic Dirac-like band with the crossing point of the linear bands lying 10 meV above the Fermi level. These observations are in a good agreement with the band structure calculations. In addition, we observe additional features along the -Y line that cannot be accounted for by the band structure calculations. Our results provide important information in understanding and exploration of novel properties in CaMnSb and related materials.
References in corpus (55)
- Two-Dimensional Gas of Massless Dirac Fermions in Graphene
- Topological Insulators
- Topological insulators and superconductors
- Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
- Quantum Spin Hall Effect in Graphene
- Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
- Topological Order and the Quantum Spin Hall Effect
- Quantum Spin Hall Insulator State in HgTe Quantum Wells
- Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
- Topological Insulators in Three Dimensions
- Weyl and Dirac Semimetals in Three Dimensional Solids
- Discovery (theoretical prediction and experimental observation) of a large-gap topological-insulator class with spin-polarized single-Dirac-cone on the surface
- A topological Dirac insulator in a quantum spin Hall phase : Experimental observation of first strong topological insulator
- Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs
- WannierTools: An open-source software package for novel topological materials
- Topological invariants of time-reversal-invariant band structures
- Discovery of a Three-dimensional Topological Dirac Semimetal, Na3Bi
- Dirac semimetal and topological phase transitions in A3Bi (A=Na, K, Rb)
- Topological Materials: Weyl Semimetals
- Experimental discovery of Weyl semimetal TaAs
- Topological nodal semimetals
- Three Dimensional Dirac Semimetal and Quantum Transports in Cd3As2
- Colloquium: Topological Band Theory
- Theoretical Discovery/Prediction: Weyl Semimetal states in the TaAs material (TaAs, NbAs, NbP, TaP) class
- Ultrahigh mobility and giant magnetoresistance in the Dirac semimetal CdAs
- Weyl semimetal phase in non-centrosymmetric transition metal monophosphides
- Observation of a topological 3D Dirac semimetal phase in high-mobility Cd3As2
- Three dimensional topological invariants for time reversal invariant Hamiltonians and the three dimensional quantum spin Hall effect
- Dirac materials
- Dirac Cone Protected by Non-Symmorphic Symmetry and 3D Dirac Line Node in ZrSiS
- Topological nodal line semimetals
- Observation of Topological Nodal Fermion Semimetal Phase in ZrSiS
- Anisotropic Dirac fermions in a Bi square net of SrMnBi2
- Large linear magnetoresistance in Dirac semi-metal Cd3As2 with Fermi surfaces close to the Dirac points
- Development of a Vacuum Ultra-Violet Laser-Based Angle-Resolved Photoemission System with a Super-High Energy Resolution Better Than 1 meV
- Quantum Hall effect in a bulk antiferromagnet EuMnBi with magnetically confined two-dimensional Dirac fermions
- A magnetic topological semimetal Sr1-yMn1-zSb2 (y, z< 0.1)
- Aharonov-Bohm oscillations in Dirac semimetal Cd3As2 nanowires
- Anisotropic Fermi Surface and Quantum Limit Transport in High Mobility 3D Dirac Semimetal Cd3As2
- Anisotropic Dirac electronic structures of AMnBi (A=Sr, Ca)
- New Developments in Laser-Based Photoemission Spectroscopy and its Scientific Applications: a Key Issues Review
- Interplay of Dirac electrons and magnetism in AMnBi2 (A=Ca, Sr)
- Observation of two-dimensional Fermi surface and Dirac dispersion in YbMnSb
- Spin-valley locking, bulk quantum Hall effect and chiral surface state in a noncentrosymmetric Dirac semimetal BaMnSb
- Bulk quantum Hall effect of spin-valley-coupled Dirac fermions in a polar antiferromagnet BaMnSb
- Unusual interlayer quantum transport behavior caused by the zeroth Landau level in YbMnBi2
- Magnetic and electronic structure of Dirac semimetal candidate EuMnSb
- Observation of Magnetopiezoelectric Effect in Antiferromagnetic Metal EuMnBi2
- Electronic structure of the candidate 2D Dirac semimetal SrMnSb2: a combined experimental and theoretical study
- Observation of well-defined quasi-particle over a wide energy range in quasi-2D system
- Electron Transport in Dirac and Weyl Semimetals
- Piezoelectricity and Topological Quantum Phase Transitions in Two-Dimensional Spin-Orbit Coupled Crystals with Time-Reversal Symmetry
- Topological transport in Dirac electronic systems: A concise review
- Infrared spectroscopic studies of the topological properties in CaMnSb2
- Spectroscopic Evidence on Realization of a Genuine Topological Nodal Line Semimetal in LaSbTe