Weyl orbits without an external magnetic field
arXiv:2004.04175 · doi:10.1103/PhysRevB.101.235117
Abstract
Weyl semimetals in a magnetic field give rise to interesting non-local electronic orbits: the ballistic transport through the bulk enabled by the chiral Landau levels is combined with a momentum-space sliding along the surface Fermi-arc driven by the Lorentz force. Bulk chiral Landau levels can also be induced by axial fields whose sign depends on the chirality of the Weyl point. However, the microscopic perturbations that give rise to them can be described in terms of gauge fields only in the low-energy sectors around the Weyl points. In addition, since pseudo-fields are intrinsic, there is no apparent reason for a Lorentz force that causes sliding along the Fermi-arcs. Therefore, the existence of non-local orbits driven exclusively by pseudo-fields is not obvious. Here, we show that for systems with at least four Weyl points in the bulk spectrum, non-local orbits can be induced by axial fields alone. We discuss the underlying mechanisms by a combination of analytical semi-classical theory, the microscopic numerical study of wave-packet dynamics, and a surface Green's function analysis.
12 pages, 5 figures
References in corpus (56)
- Topological Insulators
- Topological insulators and superconductors
- 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
- Berry Phase Effects on Electronic Properties
- Weyl and Dirac Semimetals in Three Dimensional Solids
- Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs
- Weyl Semimetal in a Topological Insulator Multilayer
- Experimental observation of Weyl points
- Observation of Weyl nodes in TaAs
- Topological Semimetals
- Fermi-arc diversity on surface terminations of the magnetic Weyl semimetal Co3Sn2S2
- Topolectrical circuits
- Quantum Oscillations from Surface Fermi-Arcs in Weyl and Dirac Semi-Metals
- Transport evidence for Fermi-arc mediated chirality transfer in the Dirac semimetal CdAs
- Chiral gauge field and axial anomaly in a Weyl semi-metal
- Experimental observation of optical Weyl points
- Notes on Anomaly Induced Transport
- Elastic Gauge Fields in Weyl Semimetals
- 3D quantum Hall effect of Fermi arcs in topological semimetals
- Chiral anomaly from strain-induced gauge fields in Dirac and Weyl semimetals
- Quantum Hall states observed in thin films of Dirac semimetal Cd3As2
- Weyl points in three-dimensional optical lattices: synthetic magnetic monopoles in momentum space
- Probing the Berry Curvature and Fermi Arcs of a Weyl Circuit
- Inhomogeneous Weyl and Dirac semimetals: Transport in axial magnetic fields and Fermi arc surface states from pseudo Landau levels
- Evolution of Weyl orbit and quantum Hall effect in Dirac semimetal Cd3As2
- Axial-field-induced chiral channels in an acoustic Weyl system
- A condensed matter realization of the axial magnetic effect
- Strain induced Chiral Magnetic Effect in Weyl semimetals
- Topological Invariants of Metals and Related Physical Effects
- Anomalous Phase Shift of Quantum Oscillations in 3D Topological Semimetals
- Pseudo-electromagnetic fields in topological semimetals
- Magnetism and anomalous transport in the Weyl semimetal PrAlGe: Possible route to axial gauge fields
- Torsional chiral magnetic effect in Weyl semimetal with topological defect
- Quantum oscillations from generic surface Fermi arcs and bulk chiral modes in Weyl semimetals
- Experimental Observation of Acoustic Weyl Points and Topological Surface States
- Quantum oscillations without magnetic field
- Current at a distance and resonant transparency in Weyl semimetals
- Universal charge and current on magnetic domain walls in Weyl semimetals
- The Realization and Dectection of Weyl Semimetals and Chiral Anomaly in Cold Atomic Systems
- Magnetic description of the Fermi arc in type-I and type-II Weyl semimetals
- Landau levels, Bardeen polynomials and Fermi arcs in Weyl semimetals: the who's who of the chiral anomaly
- Tunable axial gauge fields in engineered Weyl semimetals: Semiclassical analysis and optical lattice implementations
- Acoustogalvanic effect in Dirac and Weyl semimetals
- Lattice model for the surface states of a topological insulator with applications to magnetic and exciton instabilities
- Surface Green's functions and boundary modes using impurities: Weyl semimetals and topological insulators
- Generation of strain-induced pseudo-magnetic field in a doped type-II Weyl semimetal
- Pseudomagnetic lens as a valley and chirality splitter in Dirac and Weyl materials
- Fermi arc mediated entropy transport in topological semimetals
- Connecting the dots: Time-reversal symmetric Weyl Semimetals with tunable Fermi arcs
- Absence of signatures of Weyl orbits in the thickness dependence of quantum transport in cadmium arsenide
- Chiral response in lattice models of Weyl materials
- Anomalous conductance scaling in strained Weyl semimetals
- Quantum oscillations in Weyl semimetals - a surface theory approach
- Wavepacket dynamics on Chern band lattices in a trap