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arXiv · 1906.01922

Topological superconductivity from magnetic impurities on monolayer NbSe$_2$

Doru Sticlet·Cristian Morari
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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.

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Doru Sticlet, Cristian Morari. 2019-08-15. Topological superconductivity from magnetic impurities on monolayer NbSe$_2$. https://doi.org/10.1103/physrevb.100.075420

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