Topological superconductivity in skyrmion lattices

@article{Mascot2020TopologicalSI,
  title={Topological superconductivity in skyrmion lattices},
  author={Eric Mascot and Jasmin Bedow and Martin Graham and Stephan Rachel and Dirk K. Morr},
  journal={npj Quantum Materials},
  year={2020},
  volume={6},
  pages={1-6}
}
Atomic manipulation and interface engineering techniques have provided an intriguing approach to custom-designing topological superconductors and the ensuing Majorana zero modes, representing a paradigm for the realization of topological quantum computing and topology-based devices. Magnet-superconductor hybrid (MSH) systems have proven to be experimentally suitable to engineer topological superconductivity through the control of both the complex structure of its magnetic layer and the… 

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References

SHOWING 1-10 OF 66 REFERENCES
Topological superconductivity with deformable magnetic skyrmions
Magnetic skyrmions are nanoscale spin configurations that are efficiently created and manipulated. They hold great promises for next-generation spintronics applications. In parallel, the interplay of
Atomic-scale interface engineering of Majorana edge modes in a 2D magnet-superconductor hybrid system
TLDR
It is demonstrated that interface engineering by an atomically thin oxide layer is crucial for driving the hybrid system into a topologically nontrivial state as confirmed by theoretical calculations of the topological invariant, the Chern number.
Quantized charge transport in chiral Majorana edge modes
Majorana fermions can be realized as quasiparticles in topological superconductors, with potential applications in topological quantum computing. Recently, lattices of magnetic adatoms deposited on
Dimensional tuning of Majorana fermions and real space counting of the Chern number
Chiral superconductors have the ability to host topologically protected Majorana zero modes which have been proposed as future qubits for topological quantum computing. The recently introduced
Two-dimensional topological superconductivity in Pb/Co/Si(111)
TLDR
The measured dispersive in-gap states are interpreted as a spatial topological transition with a gap closure and could in principle be generalized to a large variety of heterostructures combining a Rashba superconductor with a magnetic layer in order to be used as a platform for engineering topological quantum phases.
A novel platform for two-dimensional chiral topological superconductivity
We show that the surface of an s-wave superconductor decorated with a two-dimensional lattice of magnetic impurities can exhibit chiral topological superconductivity. If impurities order
Synthetic spin–orbit interaction for Majorana devices
TLDR
It is shown that coupling to a magnetic texture can induce both a strong spin–orbit coupling of 1.1 meV and a Zeeman effect in a carbon nanotube and signatures of Majorana zero modes—promising for quantum computing applications—are observed.
Topological Superconductivity and High Chern Numbers in 2D Ferromagnetic Shiba Lattices.
TLDR
It is shown that the studied system supports a generalization of px+ipy superconductivity and that its topological phase diagram contains Chern numbers higher than ξ/a(≫1), where ξ is the superconducting coherence length and a is the distance between the magnetic atoms.
Tunable magnetic textures in spin valves: From spintronics to Majorana bound states
Spin-valve structures in which a change of magnetic configuration is responsible for magnetoresistance have enabled impressive advances in spintronics, focusing on magnetically storing and sensing
Isolated pairs of Majorana zero modes in a disordered superconducting lead monolayer
TLDR
Pairs of zero modes are stabilized in the middle and around the magnetic domains in a disordered superconducting Pb monolayer, demonstrating the protected Majorana nature of this zero mode pair and highlighting the role of magnetic or spin-orbit coupling textures.
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4
5
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