Skew scattering and ratchet effect in photonic graphene
arXiv:2406.03132 · doi:10.1103/PhysRevB.110.205405
Abstract
The present paper is devoted to a comprehensive theoretical study of asymmetric (skew) scattering in photonic graphene, with the main focus on its realization with semiconductor microcavity exciton-polaritons. As an important consequence of the skew scattering, we prove the appearance of the ratchet effect in this system. Triangular defects in the form of missing micropillars in a regular honeycomb lattice are considered as ones that break the spatial inversion symmetry, thus providing the possibility of the ratchet effect. By means of the numerical solution of the effective Schrödinger equation, we provide microscopical insight into the process of skew scattering and determine indicatrices, cross-sections, and asymmetry parameters. In a system with multiple coherently oriented triangular defects, a macroscopic ratchet effect occurs as a unidirectional flux upon noise-like initial conditions. Our study broadens the concept of ratchet phenomena in the field of photonics and optics of exciton-polaritons.
arXiv comment8+4 pages, 6+6 figures
References in corpus (31)
- Quantum fluids of light
- Observation of Superfluidity of Polaritons in Semiconductor Microcavities
- Quantised Vortices in an Exciton-Polariton Fluid
- Exciton-polariton condensates
- Spontaneous formation and optical manipulation of extended polariton condensates
- Polariton condensation in photonic molecules
- Spin-orbit coupling and optical spin Hall effect in photonic graphene
- Kibble-Zurek mechanism in topologically non-trivial zigzag chains of polariton micropillars
- Spontaneous coherence in spatially extended photonic systems: Non-Equilibrium Bose-Einstein condensation
- Terahertz ratchet effects in graphene with a lateral superlattice
- Hybrid Boltzmann Gross-Pitaevskii Theory of Bose-Einstein Condensation and Superfluidity in Open Driven-Dissipative Systems
- Direct observation of photonic Landau levels and helical edge states in strained honeycomb lattices
- Classical and quantum regimes of two-dimensional turbulence in trapped Bose-Einstein condensates
- Annular Vortex Chain in a Resonantly Pumped Polariton Superfluid
- Particle-like behavior of topological defects in linear wave packets in photonic graphene
- Bilayer Photonic Graphene
- Coherent topological polariton laser
- Semi-Dirac Transport and Anisotropic Localization in Polariton Honeycomb Lattices
- Experimental investigation of the ratchet effect in a two-dimensional electron system with broken spatial inversion symmetry
- Ratchet effects in two-dimensional systems with a lateral periodic potential
- Angular-dependent Klein tunneling in photonic graphene
- Photogalvanic current in artificial asymmetric nanostructures
- Ratchet effect in spatially modulated bilayer graphene: Signature of hydrodynamic transport
- Nanostructured graphene for spintronics
- 2D Quantum Turbulence in Polariton Condensates
- Spin-dependent Klein tunneling in polariton graphene with photonic spin-orbit interaction
- Ratchet effect in graphene with trigonal clusters
- Relativistic graphene ratchet on semidisk Galton board
- Charge and Spin Transport Anisotropy in Nanopatterned Graphene
- Terahertz spin ratchet effect in magnetic metamaterials
- Optical Snake States in Photonic Graphene