Chiral spin channels in curved graphene junctions
arXiv:2303.05833 · doi:10.1103/PhysRevB.108.115140
Abstract
We show that the chiral modes in circular graphene junctions provide an advantage for spin manipulation via spin-orbit coupling compared to semiconductor platforms. We derive the effective Hamiltonian for the spin dynamics of the junction's zero modes and calculate their quantum phases. We find a sweet spot in parameter space where the spin is fully in-plane and radially polarized for a given junction polarity. This represents a shortcut to singular spin configurations that would otherwise require spin-orbit coupling strengths beyond experimental reach.
arXiv comment7+15 pages, 10 figures, published version
References in corpus (42)
- Electric Field Effect in Atomically Thin Carbon Films
- The electronic properties of graphene
- Two-Dimensional Gas of Massless Dirac Fermions in Graphene
- Topological Order and the Quantum Spin Hall Effect
- Spin-orbit coupling in curved graphene, fullerenes, nanotubes, and nanotube caps
- Band-structure topologies of graphene: spin-orbit coupling effects from first principles
- Electronic transport and quantum Hall effect in bipolar graphene p-n-p junction
- Magnetic confinement of massless Dirac fermions in graphene
- Strong interface-induced spin-orbit coupling in graphene on WS2
- Graphene on transition-metal dichalcogenides: a platform for proximity spin-orbit physics and optospintronics
- Trivial and inverted Dirac bands, and emergence of quantum spin Hall states in graphene on transition-metal dichalcogenides
- Spin interference effects in ring conductors subject to Rashba coupling
- Quantized Transport in Graphene p-n Junctions in Magnetic Field
- Gate-controlled Guiding of Electrons in Graphene
- Quantum transport in Rashba spin-orbit materials: A review
- Creating and Probing Electron Whispering Gallery Modes in Graphene
- Origin and magnitude of 'designer' spin-orbit interaction in graphene on semiconducting transition metal dichalcogenides
- An On/Off Berry Phase Switch in Circular Graphene Resonators
- Electrostatically confined monolayer graphene quantum dots with orbital and valley splittings
- Snake Trajectories in Ultraclean Graphene p-n Junctions
- Tuning a Circular p-n Junction in Graphene from Quantum Confinement to Optical Guiding
- Snake States in Graphene p-n Junctions
- Electronic materials with nanoscale curved geometries
- Interaction Driven Quantum Hall Wedding cake-like Structures in Graphene Quantum Dots
- Designing Electron Spin Textures and Spin Interferometers by Shape Deformations
- Quantum Hall valley splitters and tunable Mach-Zehnder interferometer in graphene
- Imaging Dirac fermions flow through a circular Veselago lens
- Berry phase jumps and giant nonreciprocity in Dirac quantum dots
- Landau levels, edge states, and strained magnetic waveguides in graphene monolayers with enhanced spin-orbit interaction
- Co-existence of classical snake states and Aharanov-Bohm oscillations along graphene p-n junctions
- Experimental observation of spin-split energy dispersion in high-mobility single-layer graphene/WSe2 heterostructures
- Aharonov-Bohm interferometer based on n-p junction in graphene nanoribbons
- Rashba spin-orbit interaction in graphene armchair nanoribbons
- Twist-angle dependent proximity induced spin-orbit coupling in graphene/topological insulator heterostructures
- Chiral interface states in graphene - junctions
- Dirac-Weyl electrons in a periodic spin-orbit potential
- Spin-orbit-enhanced robustness of supercurrent in graphene/WS Josephson junctions
- Independent geometrical control of spin and charge resistances in curved spintronics
- Graphene whisperitronics: transducing whispering gallery modes into electronic transport
- How do edge states position themselves in a quantum Hall graphene pn junction?
- Landau levels in spin-orbit coupling proximitized graphene: bulk states
- Spin-orbit interaction and snake states in graphene - junctions