Electronic properties in a quantum well structure of Weyl semimetal
arXiv:1609.09217 · doi:10.1063/1.4947434
Abstract
We investigate the confined states and transport of three-dimensional Weyl electrons around a one-dimensional external rectangular electrostatic potential. Confined states with finite transverse wave vector exist at energies higher than the half well depth or lower than the half barrier height. The rectangular potential appears completely transparent to normal incident electrons but not otherwise. The tunneling transmission coefficient is sensitive to their incident angle and shows resonant peaks when their energy coincides with the confined spectra. In addition, for electrons in the conduction (valence) band through a potential barrier (well), the transmission spectrum has a gap of width increasing with the incident angle. Interestingly, the electron linear zero-temperature conductance over the potential can approach zero when the Fermi energy is aligned to the top and bottom energies of the potential, when only electron beams normal to the potential interfaces can pass through. The considered structure can be used to collimate Weyl electron beams.
arXiv comment5 pages, 3 figures
References in corpus (32)
- Topological Insulators
- Topological insulators and superconductors
- Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
- Discovery of a Three-dimensional Topological Dirac Semimetal, Na3Bi
- Weyl Semimetal in a Topological Insulator Multilayer
- Experimental discovery of Weyl semimetal TaAs
- Topological nodal semimetals
- Three Dimensional Dirac Semimetal and Quantum Transports in Cd3As2
- Theoretical Discovery/Prediction: Weyl Semimetal states in the TaAs material (TaAs, NbAs, NbP, TaP) class
- Observation of the chiral anomaly induced negative magneto-resistance in 3D Weyl semi-metal TaAs
- Ultrahigh mobility and giant magnetoresistance in the Dirac semimetal CdAs
- Chern semi-metal and Quantized Anomalous Hall Effect in HgCr2Se4
- Weyl semimetal phase in non-centrosymmetric transition metal monophosphides
- Correlated quantum phenomena in the strong spin-orbit regime
- Extremely large magnetoresistance and ultrahigh mobility in the topological Weyl semimetal NbP
- Quantum Hall effects in a Weyl Semi-Metal: possible application in pyrochlore Iridates
- Recent developments in transport phenomena in Weyl semimetals
- Dirac Fermions in Solids - from High Tc cuprates and Graphene to Topological Insulators and Weyl Semimetals
- Giant negative magnetoresistance induced by the chiral anomaly in individual Cd3As2 nanowires
- Experimental Observation of Large Chern numbers in Photonic Crystals
- 3D Dirac semimetals: current materials, design principles and predictions of new materials
- Adler-Bell-Jackiw anomaly in Weyl semi-metals: Application to Pyrochlore Iridates
- Weyl semimetals from noncentrosymmetric topological insulators
- Dirac and Klein-Gordon particles in one-dimensional periodic potentials
- Quantum anomalous Hall effect with tunable Chern number in magnetic topological insulator film
- Topological Imbert-Fedorov shift in Weyl semimetals
- Helical Fermi arcs and surface states in time-reversal invariant Weyl semimetals
- Bilayer graphene with single and multiple electrostatic barriers: band structure and transmission
- Tunable circular dichroism due to the chiral anomaly in Weyl semimetals
- Chirality Hall Effect in Weyl Semimetals
- Current at a distance and resonant transparency in Weyl semimetals
- Scalable Growth of High Mobility Dirac Semimetal Cd3As2 Microbelts
Cited by in corpus (4)
- Electrically tunable valley polarization in Weyl semimetals with tilted energy dispersion
- Conductance modulation in Weyl semimetals with tilted energy dispersion without a band gap
- Anisotropic magnetotransport in Dirac-Weyl magnetic junctions
- Influence of Fermi arc states and double Weyl node on tunneling in a Dirac semimetal