Orbital pseudospin-momentum locking in two-dimensional chiral borophene
arXiv:1907.04351 · doi:10.1021/acs.nanolett.9b02802
Abstract
Recently, orbital-textures have been found in Rashba and topological insulator (TI) surface states as a result of the spin-orbit coupling (SOC). Here, we predict a orbital texture, in linear dispersive Dirac bands, arising at the K/K' points of - borophene chiral monolayer. Combining first-principles calculations with effective hamiltonians, we show that the orbital pseudospin has its direction locked with the momentum in a similar way as TIs' spin-textures. Additionally, considering a layer pseudospin degree of freedom, this lattice allows stackings of layers with equivalent or opposite chiralities. In turn, we show a control of the orbital textures and layer localization through the designed stacking and external electric field. For instance, for the opposite chirality stacking, the electric field allows for an on/off switch of the orbital-textured Dirac cone.
References in corpus (29)
- Electric Field Effect in Atomically Thin Carbon Films
- The electronic properties of graphene
- Topological Insulators
- 2D materials and van der Waals heterostructures
- Topological Insulators in Three Dimensions
- Experimental Realization of Two-Dimensional Boron Sheets
- Dirac fermions in borophene
- Intrinsic Spin and Orbital Hall Effects from Orbital Texture
- Topological quantum properties of chiral crystals
- Large Fermi Arcs in Unconventional Weyl Semimetal RhSi
- Effective continuous model for surface states and thin films of three dimensional topological insulators
- Spin-pumping into surface states of topological insulator α-Sn, spin to charge conversion at room temperature
- Giant Orbital Hall Effect in Transition Metals: Origin of Large Spin and Anomalous Hall Effects
- Gigantic intrinsic orbital Hall effects in weakly spin-orbit coupled metals
- Inverse Edelstein Effect
- Orbitronics: the Intrinsic Orbital Hall Effect in p-Doped Silicon
- Orbital-Angular-Momentum Based Origin of Rashba-Type Surface Band Splitting
- Surface orbitronics: new twists from orbital Rashba physics
- Spin-orbital Texture in Topological Insulators
- Detecting Chiral Orbital Angular Momentum by Circular Dichroism ARPES
- The formation of boron sheet at the Ag(111) surface: From clusters, ribbons, to monolayers
- Orbital-Selective Spin Texture and its Manipulation in a Topological Insulator
- Magnetically Defined Qubits on 3D Topological Insulators
- Giant Edelstein effect in Topological-Insulator--Graphene heterostructures
- Two-dimensional Square Buckled Rashba Lead Chalcogenides
- Layertronic control of topological states in multilayer metal-organic frameworks
- Tuning the topological states in metal-organic bilayers
- Orbit- and Atom-Resolved Spin Textures of Intrinsic, Extrinsic and Hybridized Dirac Cone States
- Inverse Edelstein effect of the surface states of a topological insulator
Cited by in corpus (15)
- Disentangling orbital and valley Hall effects in bilayers of transition metal dichalcogenides
- Orbital Hall Insulating Phase in Transition Metal Dichalcogenide Monolayers
- Connecting Higher-Order Topology with the Orbital Hall Effect in Monolayers of Transition Metal Dichalcogenides
- Orbital Hall effect in bilayer transition metal dichalcogenides: From the intra-atomic approximation to the Bloch states orbital magnetic moment approach
- Two-dimensional orbital Hall insulators
- Topological flat band, Dirac fermions and quantum spin Hall phase in 2D Archimedean lattices
- Orbital magnetoelectric effect in zigzag nanoribbons of p-band systems
- Orbitronics in Two-dimensional Materials
- Optical rotation in thin chiral/twisted materials and the gyrotropic magnetic effect
- High-degeneracy points protected by site-permutation symmetries
- Bridging Borophene and Metal Surfaces: Structural, Electronic, and Electron Transport Properties
- Engineering metal- Dirac bands on the oxidized SiC surface
- Pseudospin-2 in photonic chiral borophene
- Orbital anomalous Hall effect in the few-layer Weyl semimetal TaIrTe4
- Structural dependence of quantum transport properties on topological nodal-line semimetal bilayer borophene