3D Topological Plasmons in Weyl Semimetals

Abstract

We systematically investigate the properties of bulk, surface and edge plasmons in Weyl semimetals in presence of a magnetic field. It is found that unidirectional plasmons with different properties exist on different surfaces, which is in consistent with the nontrivial topology of the three-dimensional (3D) bulk plasmons. These novel plasmons possess momentum-location lock and may travel between surfaces. The anomalous Hall conductivity brings about abundant anisotropic plasmon dispersions, from linear to parabolic or even hyperbolic bands. With the help of a semiclassical picture for the formation of the Weyl orbits, we point out the Fermi-arc plasmons at opposite surfaces can make up another unique 3D topological plasmon. Furthermore, there is a gapless unidirectional edge plasmon protected by the topology whose direction and position can be controlled by external field. Our work thus uncovers topological features of Weyl plasmons, which may have important applications in photoelectric devices based on chiral/topological plasmonics.

6 pages

References in corpus (22)

• The electronic properties of graphene
• Graphene plasmonics
• Weyl semimetal phase in non-centrosymmetric transition metal monophosphides
• Topological response in Weyl semimetals and the chiral anomaly
• Classification of stable three-dimensional Dirac semimetals with nontrivial topology
• Topological Semimetals
• Berry Curvature, Triangle Anomalies, and the Chiral Magnetic Effect in Fermi Liquids
• Anomalous Hall Effect in Weyl Metals
• Chiral anomaly and transport in Weyl metals
• Semiclassical theory of nonlinear magneto-optical responses with applications to topological Dirac/Weyl semimetals
• Plasmon mode as a detection of the chiral anomaly in Weyl semimetals
• Consistent Chiral Kinetic Theory in Weyl Materials: Chiral Magnetic Plasmons
• Plasmon signature in Dirac-Weyl liquids
• Optical signature of Weyl electronic structures in tantalum pnictides Ta$Pn$ ($Pn=$ P, As)
• Density response in Weyl metals
• Strain-Engineered Widely-Tunable Perfect Absorption Angle in Black Phosphorus from First-Principles
• Magneto-polaritons in Weyl semimetals in a strong magnetic field
• Tunable plasmons in large area WTe2 thin films
• Hydrodynamics of Fermi arcs: Bulk flow and surface collective modes
• Topologically Nontrivial Interband Plasmons in Type-II Weyl Semimetal MoTe${}_2$
• Chiral magnetic effect in lattice models of tilted multi-Weyl semimetals
• Surface plasmonics of Weyl semimetals

Cited by in corpus (1)

• Light control with Weyl semimetals