Majorana zero modes by engineering topological kink states in two dimensional electron gas
arXiv:1908.07692 · doi:10.1103/PhysRevB.101.165420
Abstract
Majorana zero modes (MZMs)--bearing potential applications for topological quantum computing--are verified in quasi-one-dimensional (1D) Fermion systems, including semiconductor nanowires, magnetic atomic chains, planar Josephson junctions. However, the existence of multi-bands in these systems makes the MZMs fragile to the influence of disorder. Moreover, in practical perspective, the proximity induced superconductivity may be difficult and restricted for 1D systems. Here, we propose a flexible route to realize MZMs through 1D topological kink states by engineering a 2D electron gas with antidot lattices, in which both the aforementioned issues can be avoided owing to the robustness of kink states and the intrinsically attainable superconductivity in high-dimensional systems. The MZMs are verified to be quite robust against disorders and the bending of kink states, and can be conveniently tuned by varying the Rashba spin-orbit coupling strength. Our proposal provides an experimental feasible platform for MZMs with systematic manipulability and assembleability based on the present techniques in 2D electron gas system.
6 page, 4 figures, Supplementary include
References in corpus (22)
- Non-Abelian Anyons and Topological Quantum Computation
- Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
- Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
- Observation of Majorana Fermions in Ferromagnetic Atomic Chains on a Superconductor
- Observation of Majorana Fermions in a Nb-InSb Nanowire-Nb Hybrid Quantum Device
- Majorana bound states in a coupled quantum-dot hybrid-nanowire system
- Spin-orbit gap of graphene: First-principles calculations
- Observation of topological valley transport of sound in sonic crystals
- Anomalous modulation of a zero bias peak in a hybrid nanowire-superconductor device
- Electrically detected interferometry of Majorana fermions in a topological insulator
- Topological confinement in bilayer graphene
- Valley Vortex States in Sonic Crystals
- Transport spectroscopy of NS nanowire junctions with Majorana fermions
- Distinguishing a Majorana zero mode using spin resolved measurements
- Physical mechanisms for zero-bias conductance peaks in Majorana nanowires
- Engineering artificial graphene in a two-dimensional electron gas
- Electronic Highways in Bilayer Graphene
- Observation of a Majorana zero mode in a topologically protected edge channel
- Making Massless Dirac Fermions from Patterned Two-Dimensional Electron Gases
- Rashba induced magnetoconductance oscillations in the LaAlO3-SrTiO3 heterostructure
- Helical States in Curved Bilayer Graphene
- Tunneling transport in NSN junctions made of Majorana nanowires across the topological quantum phase transition