Chiral properties of topological-state loops
arXiv:1502.07476 · doi:10.1103/PhysRevB.91.245432
Abstract
The angular momentum quantization of chiral gapless modes confined to a circularly shaped interface between two different topological phases is investigated. By examining several different setups, we show analytically that the angular momentum of the topological modes exhibits a highly chiral behavior, and can be coupled to spin and/or valley degrees of freedom, reflecting the nature of the interface states. The energies and the magnetic moments corresponding to these states can be understood from a semiclassical picture. These loops can be viewed as building blocks for artificial magnets with tunable and highly diverse properties.
References in corpus (31)
- Topological insulators and superconductors
- Quantum Spin Hall Effect in Graphene
- Topological Order and the Quantum Spin Hall Effect
- Two and one-dimensional honeycomb structures of silicon and germanium
- Quantum Spin Hall Effect in Silicene
- Valley contrasting physics in graphene: magnetic moment and topological transport
- Quantum Spin Hall Effect
- Quantum Spin Hall Effect and Topological Field Effect Transistor in Two-Dimensional Transition Metal Dichalcogenides
- Massive Dirac fermions and Hofstadter butterfly in a van der Waals heterostructure
- Large-gap quantum spin Hall insulators in tin films
- Transport properties of non-equilibrium systems under the application of light: Photo-induced quantum Hall insulators without Landau levels
- Spin-Orbit Proximity Effect in Graphene
- Topological confinement in bilayer graphene
- Spontaneous Quantum Hall States in Chirally-stacked Few-Layer Graphene Systems
- Quantum Anomalous Hall Effect in Graphene Proximity Coupled to an Antiferromagnetic Insulator
- Aharonov-Bohm effect and broken valley-degeneracy in graphene rings
- Giant magnetoresistance and perfect spin filter in silicene, germanene, and stanene
- Electronic Highways in Bilayer Graphene
- Prediction of a quantum anomalous Hall state in Co decorated silicene
- Spin-valley filtering in strained graphene structures with artificially induced carrier mass and spin-orbit coupling
- Transport Properties of Graphene Nanoroads in Boron-Nitride Sheets
- Current partition at topological zero-line intersections
- Chiral states in bilayer graphene: magnetic field dependence and gap opening
- Z2 invariant protected bound states in topological insulators
- Peculiarities of dynamics of Dirac fermions associated with zero-mass lines
- Inducing topological order in a honeycomb lattice
- Realising Haldane's vision for a Chern insulator in buckled lattices
- Topological effects and particle-physics analogies beyond the massless Dirac-Weyl fermion in graphene nanorings
- Transport of Massless Dirac Fermions in Non-topological Type Edge States
- The role of spin-orbit coupling in topologically protected interface states in Dirac materials
- Orbital magnetic moments in insulating Dirac systems: Impact on magnetotransport in graphene van der Waals heterostructures