Topological charge Fano effect in multi-Weyl semimetals

Abstract

We theoretically analyze the Fano interference in a single impurity multi-Weyl semimetal hybrid system and show the emergence of the topological charge Fano effect in the bulk local density of states. In multi-Weyl semimetals, the number of Fermi arcs at the system boundaries is determined by the topological charge $J$, a direct consequence of the "bulk-boundary" correspondence principle. Analogously, we find that $J$ also modulates the bulk Fano profile of the system with an embedded quantum impurity. Thus, by increasing $J$, the Fano lineshape evolves from resonant, typical for $J=1$ (single Weyl), towards antiresonant, extrapolating to the so-called hyper Weyl semimetals with $J\gg 1$. Specially for the maximum case protected by the rotational symmetry $C_{2J=6}$, namely the $J=3$ (triple Weyl), which acquires asymmetric Fano profile, the Fano parameter absolute value is predicted to be $\tan (C_{2J=6})$, where $C_{2J}\equiv (360^{\circ }/2J)$ defines the rotational angle. Hence, the Fano discretization in the $J$ term introduces the topological charge Fano effect in multi-Weyl semimetals. We also suggest a transport device where we expect that the proposed Fano effect could be detected.

References in corpus (29)

• The electronic properties of graphene
• Weyl and Dirac Semimetals in Three Dimensional Solids
• Fano resonances in nanoscale structures
• Topological Materials: Weyl Semimetals
• Chern semi-metal and Quantized Anomalous Hall Effect in HgCr2Se4
• Multi-Weyl Topological Semimetals Stabilized by Point Group Symmetry
• Discovery of Weyl fermion semimetals and topological Fermi arc states
• A new type of Weyl semimetal with quadratic double Weyl fermions in SrSi2
• Theory of the Fano Resonance in the STM Tunneling Density of States due to a Single Kondo Impurity
• Localized Magnetic States in Graphene
• Electronic Transport and quantum oscillation of Topological Semimetals
• Weyl, Dirac and high-fold chiral fermions in topological quantum materials
• Twofold quadruple Weyl nodes in chiral cubic crystals
• Predicted Realization of Cubic Dirac Fermion in Quasi-One-Dimensional Transition-Metal MonoChalcogenides
• Optical conductivity of multi-Weyl semimetals
• Thermoelectric transport in double-Weyl semimetals
• Quasiparticle interference on type-I and type-II Weyl semimetal surfaces: a review
• Semiclassical Boltzmann transport theory for multi-Weyl semimetals
• Non-Abelian anomalies in multi-Weyl semimetals
• Magnetotransport in multi-Weyl semimetals: A kinetic theory approach
• Charge-4 Weyl point: Minimum lattice model and chirality-dependent properties
• Majorana oscillations modulated by Fano interference and dregree of non-locality in a topological superconducting nanowire-quantum dot system
• Magneto-transport phenomena of type-I multi-Weyl semimetals in co-planar setups
• Doping and tilting on optics in noncentrosymmetric multi-Weyl semimetals
• Thermal dependence of the zero-bias conductance through a nanostructure
• Topological Properties of the Chiral Magnetic Effect in Multi-Weyl Semimetals
• Kondo screening regimes in multi-Dirac and Weyl systems
• Chiral magnetic chemical bonds in molecular states of impurities in Weyl semimetals
• Atomic frustrated impurity states in Weyl metals

Cited by in corpus (2)

• Analogue of atomic collapse for adatoms on rhombohedral multilayer graphene
• Impact of Broken Inversion Symmetry on Molecular States in multi-Weyl fermions