Controlling Majorana hybridization in magnetic chain-superconductor systems
arXiv:2308.07961 · doi:10.1103/PhysRevResearch.6.033154
Abstract
We propose controlling the hybridization between Majorana zero modes at the ends of magnetic adatom chains on superconductors by an additional magnetic adatom deposited close by. By tuning the additional adatom's magnetization, position, and coupling to the superconductor, we can couple and decouple the Majorana modes as well as control the ground state parity. The scheme is independent of microscopic details in ferromagnetic and helical magnetic chains on superconductors with and without spin-orbit coupling, which we show by studying their full microscopic models and their common low-energy description. Our results show that scanning tunneling microscopy and electron spin resonance techniques are promising tools for controlling the Majorana hybridization in magnetic adatoms-superconductor setups, providing a basis for Majorana parity measurements, fusion, and braiding techniques.
Published version
References in corpus (33)
- Non-Abelian Anyons and Topological Quantum Computation
- Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
- 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
- Introduction to topological superconductivity and Majorana fermions
- Distinguishing a Majorana zero mode using spin resolved measurements
- Topological Superconductivity induced by Ferromagnetic Metal Chains
- Strong localization of Majorana end states in chains of magnetic adatoms
- Topological Yu-Shiba-Rusinov chain from spin-orbit coupling
- Majorana nanowires for topological quantum computation
- Tuning the exchange bias on a single atom from 1 mT to 10 T
- Roadmap towards Majorana qubits and nonabelian physics in quantum dot-based minimal Kitaev chains
- Self-organized topological state in the magnetic chain on the surface of a superconductor
- Weak measurement protocols for Majorana bound state identification
- Majorana Braiding Dynamics on Nanowires
- In search of Majorana
- Fusion protocol for Majorana modes in coupled quantum dots
- Topological properties of helical Shiba chains with general impurity strength and hybridization
- Parity-to-charge conversion in Majorana qubit readout
- Topological properties of chains of magnetic impurities on a superconducting substrate: Interplay between the Shiba band and ferromagnetic wire limits
- Non-Majorana modes in diluted spin chains proximitized to a superconductor
- A theoretical review on the single-impurity electron spin resonance on surfaces
- Surrogate model solver for impurity-induced superconducting subgap states
- Braiding of non-Abelian anyons using pairwise interactions
- Prevalence of trivial zero-energy sub-gap states in non-uniform helical spin chains on the surface of superconductors
- Fusion rules in a Majorana single-charge transistor
- Testing the topological nature of end states in antiferromagnetic atomic chains on superconductors
- Mitigating disorder-induced zero-energy states in weakly-coupled semiconductor-superconductor hybrid systems
- Robust topological superconductivity in weakly coupled nanowire-superconductor hybrid structures
- Systematic study of Mn atoms, artificial dimers and chains on superconducting Ta(110)
- Interference and parity blockade in transport through a Majorana box
- Design of a Majorana trijunction