Topological superconductivity from magnetic impurities on monolayer NbSe${}_2$

Abstract

Recent experimental studies have found that magnetic impurities deposited on superconducting monolayer NbSe${}_2$ generate coupled Yu-Shiba-Rusinov bound states. Here we consider ferromagnetic chains of impurities which induce a Yu-Shiba-Rusinov band and harbor Majorana bound states at the chain edges. We show that these topological phases are stabilized by strong Ising spin-orbit coupling in the monolayer and examine the conditions under which Majorana phases appear as a function of distance between impurities, impurity spin projection, orientation of chains on the surface of the monolayer, and strength of magnetic exchange energy between impurity and superconductor.

arXiv comment21 pages

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Cited by in corpus (18)

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• Yu-Shiba-Rusinov states in real metals
• Spatially dispersing Yu-Shiba-Rusinov states in the unconventional superconductor ${\mathrm{FeTe}}_{0.55}{\mathrm{Se}}_{0.45}$
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• Engineering anomalous Floquet Majorana modes and their time evolution in helical Shiba chain
• Twisted Bogoliubov quasiparticles in the superconducting NbSe${}_2$ monolayer on graphene
• Tailoring phase transition from topological superconductor to trivial superconductor induced by magnetic textures of a spin-chain on a $p$-wave superconductor
• Impurity-induced excitations in a topological two-dimensional ferromagnet/superconductor van der Waals moiré heterostructure
• Diamagnetic property and optical absorption in conventional superconductors with magnetic impurities
• Unconventional pairing in Ising superconductors: Application to monolayer NbSe${}_2$
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