Moiré-enabled topological superconductivity
arXiv:2011.09760 · doi:10.1021/acs.nanolett.1c03856
Abstract
The search for artificial topological superconductivity has been limited by the stringent conditions required for its emergence. As exemplified by the recent discoveries of various correlated electronic states in twisted van der Waals materials, moiré patterns can act as a powerful knob to create artificial electronic structures. Here, we demonstrate that a moiré pattern between a van der Waals superconductor and a monolayer ferromagnet creates a periodic potential modulation that enables the realization of a topological superconducting state that would not be accessible in the absence of the moiré. The magnetic moiré pattern gives rise to Yu-Shiba-Rusinov minibands and periodic modulation of the Majorana edge modes that we detect using low-temperature scanning tunneling microscopy (STM) and spectroscopy (STS). Moiré patterns and, more broadly, periodic potential modulations are powerful tools to overcome the conventional constrains for realizing and controlling topological superconductivity.
arXiv comment6 pages, 4 figures
References in corpus (36)
- Topological insulators and superconductors
- Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
- Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
- Helical liquids and Majorana bound states in quantum wires
- Moire bands in twisted double-layer graphene
- New directions in the pursuit of Majorana fermions in solid state systems
- Evidence of Majorana fermions in an Al - InAs nanowire topological superconductor
- Observation of Majorana Fermions in Ferromagnetic Atomic Chains on a Superconductor
- A generic new platform for topological quantum computation using semiconductor heterostructures
- Search for Majorana fermions in superconductors
- Non-Abelian statistics and topological quantum information processing in 1D wire networks
- Observation of the fractional ac Josephson effect: the signature of Majorana particles
- Majorana bound states in a coupled quantum-dot hybrid-nanowire system
- Flat Bands in Slightly Twisted Bilayer Graphene
- Characterization of collective ground states in single-layer NbSe2
- Stacking-Dependent Magnetism in Bilayer CrI
- Twinning superlattices in indium phosphide nanowires
- Direct observation of van der Waals stacking dependent interlayer magnetism
- Switching 2D Magnetic States via Pressure Tuning of Layer Stacking
- Topological superconducting phase in helical Shiba chains
- Milestones toward Majorana-based quantum computing
- Ultraflat bands and shear solitons in Moiré patterns of twisted bilayer transition metal dichalcogenides
- Topological superconductivity in a van der Waals heterostructure
- High-resolution studies of the Majorana atomic chain platform
- Majorana Fermions in superconducting 1D systems having periodic, quasiperiodic, and disordered potentials
- Stacking domains and dislocation networks in marginally twisted bilayers of transition metal dichalcogenides
- Topological superconductor to Anderson localization transition in one-dimensional incommensurate lattices
- Superconducting, Insulating, and Anomalous Metallic Regimes in a Gated Two-Dimensional Semiconductor-Superconductor Array
- Ising superconductivity and magnetism in NbSe
- Electronic and magnetic characterization of epitaxial CrBr monolayers
- Enhanced proximity effect in zigzag-shaped Majorana Josephson junctions
- On the charge and magnetic ordering in monolayer NbSe: a first principles study
- Reentrant topological transitions in a quantum wire/superconductor system with quasiperiodic lattice modulation
- Realizing Topological Superconductivity with Superlattices
- Synthesizing Majorana zero-energy modes in a periodically gated quantum wire
- Superlattice platform for chiral superconductivity with tuneable and high Chern numbers