Proximity-induced topological phases in bilayer graphene

Abstract

We study the band structure of phases induced by depositing bilayer graphene on a transition metal dichalcogenide monolayer. Tight-binding and low-energy effective Hamiltonian calculations show that it is possible to induce topologically nontrivial phases that should exhibit spin Hall effect in these systems. We classify bulk insulating phases through calculation of the Z${}_2$ invariant, which unequivocally identifies the topology of the structure. The study of these and similar hybrid systems under applied gate voltage opens the possibility for tunable topological structures in real experimental systems.

arXiv comment4 pages, 4 figures

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Cited by in corpus (18)

• Van der Waals heterostructures for spintronics and opto-spintronics
• Tunable spin-polarized edge currents in proximitized transition metal dichalcogenides
• Bilayer graphene encapsulated within monolayers of WS${}_2$ or Cr${}_2$Ge${}_2$Te${}_6$: Tunable proximity spin-orbit or exchange coupling
• Proximity spin-orbit and exchange coupling in ABA and ABC trilayer graphene van der Waals heterostructures
• Antiferromagnetic spin valve from heterostructure of two-dimensional hexagonal crystals
• Single and bilayer graphene on the topological insulator Bi${}_2$Se${}_3$: Electronic and spin-orbit properties from first principles
• Van der Waals heterostructures with spin-orbit coupling
• Multi-flavor Dirac fermions in Kekulé-distorted graphene bilayers
• Proximity-induced diversified magnetic states and electrically-controllable spin polarization in bilayer graphene: Towards layered spintronics
• Impact of competing energy scales on the shell-filling sequence in elliptic bilayer graphene quantum dots
• Tuning of Bilayer Graphene Heterostructure by Horizontally Incident Circular Polarized Light
• Proximity-induced spin-polarized magnetocaloric effect in transition metal dichalcogenides
• Electrically controlled crossover between $2\pi$- and $4\pi$-Josephson effects through topologically-confined channels in silicene
• Topological Transitions in a Model for Proximity Induced Superconductivity
• Engineering Majorana corner modes from two-dimensional hexagonal crystals
• Chiral Majorana Fermions in two dimensional square lattice antiferromagnet with proximity-induced superconductivity
• Layered Opposite Rashba Spin-Orbit Coupling in Bilayer Graphene: Loss of Spin Chirality, Symmetry Breaking and Topological Transition
• Valley-Polarized Quantum Anomalous Hall Phase in Bilayer Graphene with Layer-Dependent Proximity Effects