Role of topological charges in the nonlinear-optical response from Weyl semimetals
arXiv:2306.09625 · doi:10.1103/PhysRevB.107.224308
Abstract
The successful realization of the topological Weyl semimetals has revolutionized contemporary physics. In recent years, multi-Weyl semimetals, a class of topological Weyl semimetals, has attracted broad interest in condensed-matter physics. Multi-Weyl semimetals are emerging topological semimetals with nonlinear anisotropic energy dispersion, which is characterized by higher topological charges. In this study, we investigate how the topological charge affects the nonlinear optical response from multi-Weyl semimetals. It has been observed that the laser-driven electronic current is characteristic of the topological charge, and the laser polarization's direction influences the current's direction and amplitude. In addition, the anomalous current, perpendicular to the laser's polarization, carries a distinct signature of the topological charges and encodes the information about the parity and amplitude of the nontrivial Berry curvature. We show that the anomalous current associated with the anomalous Hall effect remains no longer proportional to the topological charge at higher laser intensity -- a significant deviation from the linear response theory. High-harmonic spectroscopy is employed to capture the distinct and interesting features of the currents in multi-Weyl semimetals where the topological charge drastically impacts the harmonics' yield and energy cutoff.
21 pages, 7 figures
References in corpus (20)
- Classification of stable three-dimensional Dirac semimetals with nontrivial topology
- Light-induced emergent phenomena in 2D materials and topological materials
- Chiral Anomaly and Diffusive Magnetotransport in Weyl Metals
- Introduction to theory of high-harmonic generation in solids: tutorial
- Quantum transport in Dirac materials: signatures of tilted and anisotropic Dirac and Weyl cones
- Light-Induced Valleytronics in Pristine Graphene
- High-Harmonic Generation from Monolayer and Bilayer Graphene
- Influence of vacancy defects in solid high-order harmonic generation
- High-harmonic spectroscopy of light-driven nonlinear anisotropic anomalous Hall effect in a Weyl semimetal
- Anomalous thermoelectric phenomena in lattice models of multi-Weyl semimetals
- Chiral anomaly induced nonlinear Hall effect in multi-Weyl semimetals
- High-Harmonic Spectroscopy of Coherent Lattice Dynamics in Graphene
- Controlling Valley-Polarisation in Graphene via Tailored Light Pulses
- Role of Majorana Fermions in high-harmonic generation from Kitaev chain
- Topology and symmetry of circular photogalvanic effect in the chiral multifold semimetals: a review
- Microscopic analysis of high harmonic generation in semiconductors with degenerate bands
- Probing phonon-driven symmetry alterations in graphene via high-harmonic spectroscopy
- Topological frequency conversion in Weyl semimetals
- Non-Linear Hall Effect in Multi-Weyl Semimetals
- Chiral magnetic effect in lattice models of tilted multi-Weyl semimetals
Cited by in corpus (10)
- Non-linear Hall Effects: Mechanisms and Materials
- How massless are Weyl fermions in Weyl semimetals?
- Photocurrent generation in solids via linearly polarized laser
- High-harmonic generation in semi-Dirac and Weyl semimetals with broken time-reversal symmetry: Exploring merging of Weyl nodes
- Tailoring Photocurrent in Weyl Semimetals via Intense Laser Irradiation
- Berry curvature and shift vector effects at high-order wave mixing in biased bilayer graphene
- Terahertz third-harmonic generation of lightwave driven Weyl fermions far from equilibrium
- Nonlinear Optical Spectroscopy of Nodal-Line Semimetals
- Strong Field Optical Hall Effect in 2D Weyl Semimetal
- Impact of Broken Inversion Symmetry on Molecular States in multi-Weyl fermions