Topological Circular Dichroism in Chiral Multifold Semimetals
arXiv:2303.17553 · doi:10.1103/PhysRevLett.131.116603
Abstract
Uncovering the physical contents of the nontrivial topology of quantum states is a critical problem in condensed matter physics. Here, we study the topological circular dichroism in chiral semimetals using linear response theory and first-principles calculations. We show that, when the low-energy spectrum respects emergent SO(3) rotational symmetry, topological circular dichroism is forbidden for Weyl fermions, and thus is unique to chiral multifold fermions. This is a result of the selection rule that is imposed by the emergent symmetry under the combination of particle-hole conjugation and spatial inversion. Using first-principles calculations, we predict that topological circular dichroism occurs in CoSi for photon energy below about 0.2 eV. Our work demonstrates the existence of a response property of unconventional fermions that is fundamentally different from the response of Dirac and Weyl fermions, motivating further study to uncover other unique responses.
arXiv comment6+7 pages, 4+4 figures
References in corpus (37)
- Universal Dynamic Conductivity and Quantized Visible Opacity of Suspended Graphene
- Maximally-localized generalized Wannier functions for composite energy bands
- Maximally localized Wannier functions: Theory and applications
- Beyond Dirac and Weyl fermions: Unconventional quasiparticles in conventional crystals
- Quantized circular photogalvanic effect in Weyl semimetals
- Topological quantum properties of chiral crystals
- Multiple types of topological fermions in transition metal silicides
- Large Fermi Arcs in Unconventional Weyl Semimetal RhSi
- Discovery of topological chiral crystals with helicoid arc states
- New classes of chiral topological nodes with non-contractible surface Fermi arcs in CoSi
- Observation of Chiral Fermions with a Large Topological Charge and and Associated Fermi-Arc Surface States in CoSi
- Chiral Topological Semimetal with Multifold Band Crossings and Long Fermi arcs
- Gyrotropic magnetic effect and the magnetic moment on the Fermi surface
- Observation of Topological Photocurrents in the Chiral Weyl Semimetal RhSi
- Chiral Optical Response of Multifold Fermions
- Ab initio calculation of the shift photocurrent by Wannier interpolation
- Topology and geometry under the nonlinear electromagnetic spotlight
- Giant topological longitudinal circular photo-galvanic effect in the chiral multifold semimetal CoSi
- Gyrotropic effects in trigonal tellurium studied from first principles
- Chiral magnetic effect and natural optical activity in (Weyl) metals
- Optical detection and manipulation of spontaneous gyrotropic electronic order in a transition-metal dichalcogenide semimetal
- Quantum geometry induced second harmonic generation
- Nonreciprocal Directional Dichroism Induced by the Quantum Metric Dipole
- Interactions remove the quantization of the chiral photocurrent at Weyl points
- Semi-classical wave packet dynamics in non-uniform electric fields
- Optical gyrotropy as a test for dynamic chiral magnetic effect of Weyl semimetals
- Multifold nodal points in magnetic materials
- Optical signatures of multifold fermions in the chiral topological semimetal CoSi
- Chiral fermion reversal in chiral crystals
- Linear optical conductivity of chiral multifold fermions
- Band theory of spatial dispersion in magnetoelectrics
- Theory of optical responses in clean multi-band superconductors
- Circular dichroism as a probe for topology in three-dimensional semimetals
- Effect of interactions on the quantization of the chiral photocurrent for double-Weyl semimetals
- Multipole theory of optical spatial dispersion in crystals
- Signatures of two- and three-dimensional semimetals from circular dichroism
- Visualizing higher-fold topology in chiral crystals
Cited by in corpus (6)
- Quantized Integrated Shift Effect in Multigap Topological Phases
- Intrinsic and extrinsic photogalvanic effects in twisted bilayer graphene
- Moiré Collapse and Luttinger Liquids In Twisted Anisotropic Homobilayers
- Theory of Photocurrent and High-Harmonic Generation with Chiral Fermions
- Fermi surface and topology of multiband superconductor BeAu
- Orbital optical activity in noncentrosymmetric metals and superconductors