# Fermi arc plasmons in Weyl semimetals

@article{Song2017FermiAP, title={Fermi arc plasmons in Weyl semimetals}, author={Justin C W Song and Mark S. Rudner}, journal={Physical Review B}, year={2017}, volume={96}, pages={205443} }

Weyl semimetals, prototypical three dimensional topological metals, possess a unique band structure that has enriched the ``standard model'' of metallic behavior. This work unveils how the unusual topological surface states of Weyl semimetals radically alter their plasmonic characteristics, yielding intrinsic hyperbolic surface plasmons. These Fermi-arc plasmons have a rich phenomenology, and arise from the coupled dynamics of carriers both on the unusual open-segment surface Fermi arc and the…

## 26 Citations

Quantum nonlocal theory of topological Fermi arc plasmons in Weyl semimetals

- Physics
- 2018

The surface of a Weyl semimetal (WSM) displays Fermi arcs, i.e., disjoint segments of a two-dimensional Fermi contour. We present a quantum-mechanical nonlocal theory of chiral Fermi arc plasmons in…

Sound of Fermi arcs: a linearly dispersing gapless surface plasmon mode in undoped Weyl semimetals

- PhysicsPhysical Review B
- 2019

Using Green's function of semi-infinite Weyl semimetals we find that the collective charge excitations of Fermi arcs in undoped Weyl semi-metals are linearly dispersing gapless plasmon modes. The…

Excitonic collective modes in Weyl semimetals

- PhysicsPhysical Review B
- 2018

Weyl semi-metals are three dimensional generalizations of graphene with point-like Fermi surfaces. Their linear electronic dispersion leads to a window in the particle-hole excitation spectrum which…

Characterization of a Weyl semimetal using a unique feature of surface plasmon polaritons

- Physics
- 2020

We theoretically investigate the decay constant of surface plasmon polaritons in a Weyl semimetal and propose an experimental method for detecting Weyl semimetals. It is revealed that the surface…

Acoustic plasmons in type-I Weyl semimetals

- Physics
- 2021

Massless chiral fermions emergent in inversion symmetry-breaking Weyl semimetals (WSMs) reside in the vicinity of multiple low symmetry nodes and thus acquire strongly anisotropic dispersion. We…

Dynamical density and spin response of Fermi arcs and their consequences for Weyl semimetals

- Physics
- 2020

Weyl semimetals exhibit exotic Fermi-arc surface states, which strongly affect their electromagnetic properties. We derive analytical expressions for all components of the composite density-spin…

Optical properties and electromagnetic modes of Weyl semimetals

- PhysicsPhysical Review B
- 2019

We present systematic theoretical studies of both bulk and surface electromagnetic eigenmodes, or polaritons, in Weyl semimetals. We derive the tensors of bulk and surface conductivity taking into…

Green's function of semi-infinite Weyl semimetals

- PhysicsPhysical Review B
- 2018

We classify all possible boundary conditions (BCs) for a Weyl material into two classes: (i) BC that mixes the spin projection but does not change the chirality attribute, and (ii) BC that mixes the…

Giant tunable nonreciprocity of light in Weyl semimetals

- PhysicsPhysical Review B
- 2018

The propagation of light in Weyl semimetal films is analyzed. The magnetic family of these materials is known by anomalous Hall effect, which, being enhanced by the large Berry curvature, allows one…

Quantum oscillations in Dirac magnetoplasmons

- Physics
- 2019

The plasmon frequency in standard electron gases with a parabolic single-particle dispersion is a purely classical quantity that is not sensitive to electron interactions or the equation of state. We…

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