Chiral Floquet Engineering on Topological Fermions in Chiral Crystals
arXiv:2408.03115 · doi:10.1038/s41535-024-00714-7
Abstract
The interplay of chiralities in light and quantum matter provides an opportunity to design and manipulate chirality-dependent properties in quantum materials. Herein we report the chirality-dependent Floquet engineering on topological fermions with the high Chern number in chiral crystal CoSi via circularly polarized light (CPL) pumping. Intense light pumping does not compromise the gapless nature of topological fermions in CoSi, but displaces the crossing points in momentum space along the direction of light propagation. The Floquet chirality index is proposed to signify the interplay between the chiralities of topological fermion, crystal, and incident light, which determines the amplitudes and directions of light-induced momentum shifts. Regarding the time-reversal symmetry breaking induced by the CPL pumping, momentum shifts of topological fermions result in the birth of transient anomalous Hall signals in non-magnetic CoSi within an ultrafast time scale, which Mid-infrared (IR) pumping and terahertz (THz) Kerr or Faraday probe spectroscopy could experimentally detect. Our findings provide insights into exploring novel applications in optoelectronic devices by leveraging the degree of freedom of chirality in the non-equilibrium regime.
References in corpus (63)
- Wannier90: A Tool for Obtaining Maximally-Localised Wannier Functions
- WannierTools: An open-source software package for novel topological materials
- Floquet Topological Insulator in Semiconductor Quantum Wells
- Photovoltaic Hall effect in graphene
- Observation of Floquet-Bloch states on the surface of a topological insulator
- Beyond Dirac and Weyl fermions: Unconventional quasiparticles in conventional crystals
- Floquet Engineering of Quantum Materials
- Quantum Hall effects in a Weyl Semi-Metal: possible application in pyrochlore Iridates
- Light-induced anomalous Hall effect in graphene
- Quantized circular photogalvanic effect in Weyl semimetals
- Nonthermal pathways to ultrafast control in quantum materials
- Topological quantum properties of chiral crystals
- Multiple types of topological fermions in transition metal silicides
- Direct optical detection of Weyl fermion chirality in a topological semimetal
- Large Fermi Arcs in Unconventional Weyl Semimetal RhSi
- Selective scattering between Floquet-Bloch and Volkov states in a topological insulator
- Discovery of topological chiral crystals with helicoid arc states
- New classes of chiral topological nodes with non-contractible surface Fermi arcs in CoSi
- Creating stable Floquet-Weyl semimetals by laser-driving of 3D Dirac materials
- Brillouin-Wigner theory for high-frequency expansion in periodically driven systems: Application to Floquet topological insulators
- Ultrafast Generation of Pseudo-magnetic Field for Valley Excitons in WSe2 Monolayers
- Photoinduced transition between conventional and topological insulators in two-dimensional electronic systems
- Observation of Chiral Fermions with a Large Topological Charge and and Associated Fermi-Arc Surface States in CoSi
- Light-induced emergent phenomena in 2D materials and topological materials
- Chiral Topological Semimetal with Multifold Band Crossings and Long Fermi arcs
- Theory of pump-probe photoemission in graphene: Ultrafast tuning of Floquet bands and local pseudospin textures
- Tunable Weyl Points in Periodically Driven Nodal Line Semimetals
- Observation of Topological Photocurrents in the Chiral Weyl Semimetal RhSi
- Pseudospin-selective Floquet band engineering in black phosphorus
- Weyl, Dirac and high-fold chiral fermions in topological quantum materials
- Chirality driven topological electronic structure of DNA-like materials
- Chiral Optical Response of Multifold Fermions
- Microscopic theory for the light-induced anomalous Hall effect in graphene
- When chiral photons meet chiral fermions - Photoinduced anomalous Hall effects in Weyl semimetals
- Observation and control of maximal Chern numbers in a chiral topological semimetal
- Large, valley-exclusive Bloch-Siegert shift in monolayer WS2
- Photoinduced topological phase transitions in strained black phosphorus
- Buildup and dephasing of Floquet-Bloch bands on subcycle time scales
- Chiral plasmons without magnetic field
- On the survival of Floquet-Bloch states in the presence of scattering
- Theory of photoinduced Floquet Weyl semimetal phases
- Bicircular light tuning of magnetic symmetry and topology in Dirac semimetal CdAs
- Crystal growth and quantum oscillations in the topological chiral semimetal CoSi
- Optical signatures of multifold fermions in the chiral topological semimetal CoSi
- Quasiparticle Interference Evidence of the Topological Fermi Arc States in Chiral Fermionic Semimetal CoSi
- Chiral fermion reversal in chiral crystals
- Floquet band structure of a semi-Dirac system
- Quasi-symmetry protected topology in a semi-metal
- Floquet engineering of black phosphorus upon below-gap pumping
- Floquet Engineering of Nonequilibrium Valley-Polarized Quantum Anomalous Hall Effect with Tunable Chern Number
- Theoretical Understanding of Photon Spectroscopies in Correlated Materials In and Out of Equilibrium
- Photoninduced Weyl half-metal phase and spin filter effect from topological Dirac semimetals
- Direct observation of handedness-dependent quasiparticle interference in the two enantiomers of topological chiral semimetal PdGa
- Floquet states in dissipative open quantum systems
- Unconventional Resistivity Scaling in Topological Semimetal CoSi
- Floquet engineering of magnetic topological insulator MnBiTe films
- Chirality locking charge density waves in a chiral crystal
- Quantum Oscillations of the Quasiparticle Lifetime in a Metal
- Disentangling the Competing Mechanisms of Light-Induced Anomalous Hall Conductivity in Three-Dimensional Dirac Semimetal
- Observing photo-induced chiral edge states of graphene nanoribbons in pump-probe spectroscopies
- Trompe L'oeil Ferromagnetism: magnetic point group analysis
- Predicted photoinduced pair annihilation of emergent magnetic charges in the organic salt -(BEDT-TTF)I irradiated by linearly polarized light
- Anomalous Hall effect of light-driven three-dimensional Dirac electrons in bismuth