Waveguide Modes in Weyl Semimetals with Tilted Dirac Cones
arXiv:1905.12650 · doi:10.1364/OE.27.036164
Abstract
We theoretically study unattenuated electromagnetic guided wave modes in centrosymmetric Weyl semimetal layered systems. By solving Maxwell's equations for the electromagnetic fields and using the appropriate boundary conditions, we derive dispersion relations for propagating modes in a finite-sized Weyl semimetal. Our findings reveal that for ultrathin structures, and proper Weyl cones tilts, extremely localized guided waves can propagate along the semimetal interface over a certain range of frequencies. This follows from the anisotropic nature of the semimetal where the diagonal components of the permittivity can exhibit a tunable epsilon-near-zero response. From the dispersion diagrams, we determine experimentally accessible regimes that lead to high energy-density confinement in the Weyl semimetal layer. Furthermore, we show that the net system power can vanish all together, depending on the Weyl cone tilt and frequency of the electromagnetic wave.These effects are seen in the energy transport velocity, which demonstrates a substantial slowdown in the propagation of electromagnetic energy near critical points of the dispersion diagrams. Our results can provide guidelines in designing Weyl semimetal waveguides that can offer efficient control in the velocity and direction of energy flow.
References in corpus (45)
- Topological Insulators
- Topological insulators and superconductors
- Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
- Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs
- Weyl Semimetal in a Topological Insulator Multilayer
- Dirac semimetal and topological phase transitions in A3Bi (A=Na, K, Rb)
- Theoretical Discovery/Prediction: Weyl Semimetal states in the TaAs material (TaAs, NbAs, NbP, TaP) class
- Extremely large magnetoresistance and ultrahigh mobility in the topological Weyl semimetal NbP
- Epsilon-Near-Zero (ENZ) Metamaterials and Electromagnetic Sources: Tailoring the Radiation Phase Pattern
- Observation of the chiral magnetic effect in ZrTe5
- Discovery of a Weyl Fermion semimetal state in NbAs
- Prediction of the Weyl semimetal in the orthorhombic MoTe2
- Direct optical detection of Weyl fermion chirality in a topological semimetal
- Dielectric response and novel electromagnetic modes in three-dimensional Dirac semimetal films
- Observation of Fermi Arcs in Type-II Weyl Semimetal Candidate WTe2
- Chiral gauge field and axial anomaly in a Weyl semi-metal
- Experimental observation of optical Weyl points
- Perfect Absorption in Ultrathin Epsilon-Near-Zero Metamaterials Induced by Fast-Wave Non-Radiative Modes
- Optical spectroscopy study of three dimensional Dirac semimetal ZrTe
- Robust Type-II Weyl Semimetal Phase in Transition Metal Diphosphides XP (X = Mo, W)
- Optical evidence for a Weyl semimetal state in pyrochlore Eu2Ir2O7
- Chiral anomaly and optical absorption in Weyl semimetals
- Three-dimensional Dirac fermions in quasicrystals as seen via optical conductivity
- Funneling Light Through a Subwavelength Aperture with Epsilon-Near-Zero Materials
- Optical Signatures of Weyl Points in TaAs
- Giant tunable nonreciprocity of light in Weyl semimetals
- Magneto-optical conductivity of Weyl semimetals
- Plasmon mode as a detection of the chiral anomaly in Weyl semimetals
- Topological Imbert-Fedorov shift in Weyl semimetals
- Experimental realization of type-II Weyl state in non-centrosymmetric TaIrTe
- Theory of Kerr and Faraday rotations and linear dichroism in Topological Weyl Semimetals
- Epsilon-Near-Zero Response and Tunable Perfect Absorption in Weyl Semimetals
- Plasmon signature in Dirac-Weyl liquids
- Optical Field Enhancement in Nanoscale Slot Waveguides of Hyperbolic Metamaterials
- A Semi-Classical View on Epsilon-Near-Zero Resonant Tunneling Modes in Metal/Insulator/Metal Nanocavities
- Optical properties and electromagnetic modes of Weyl semimetals
- Polariton excitation in epsilon-near-zero slabs: transient trapping of slow light
- Epsilon-Near-Zero behavior from plasmonic Dirac point: theory and realization using two-dimensional materials
- Near-perfect absorption in epsilon-near-zero structures with hyperbolic dispersion
- Absorption of circular polarized light in tilted Type-I and II Weyl semimetals
- Chiral Electromagnetic Waves in Weyl Semimetal
- Exotic leaky wave radiation from anisotropic epsilon near zero metamaterials
- Universality of plasmon excitations in Dirac semimetals
- Imaginary part of Hall conductivity in tilted doped Weyl semimetal with both broken time reversal and inversion symmetry
- Collective effects in tilted Weyl cones: optical conductivity, polarization, and Coulomb interactions reshaping the cone
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- Evolution of Pair Correlation Symmetries and Supercurrent Reversal in Tilted Weyl Semimetals
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