Skyrmion-induced subgap states in p-wave superconductors

Abstract

In s-wave systems, it has been theoretically shown that a ferromagnetic film hosting a skyrmion can induce a bound state embedded in the opposite-spin continuum. In this work, we consider a case of skyrmion-induced state in a p-wave superconductor. We find that the skyrmion induces a bound state that generally resides \emph{within} the spectral gap and is isolated from all other states, in contrast to the case of conventional superconductors. To this end, we derive an approximate expression for the $T$-matrix, through which we calculate the spin-polarized local density of states which is observable in scanning tunneling microscopy measurements. We find the unique spectroscopic features of the skyrmion-induced bound state and discuss how our predictions could be employed as novel experimental probes for p-wave superconducting states.

5+4 pages, 3 figures

References in corpus (2)

• Spontaneous Skyrmion Ground States in Magnetic Metals
• Formation of a topological non-Fermi liquid in MnSi

Cited by in corpus (9)

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• Repulsion of a Néel-type skyrmion from a Pearl vortex in thin ferromagnet-superconductor heterostructures
• Topological superconductivity in Fibonacci quasicrystals
• Chirality inversion and radius blow-up of a Néel-type skyrmion by a Pearl vortex
• Anatomy of Spin and Current Generation from Magnetization Gradients in Topological Insulators and Rashba Metals
• Topological superconductivity in a magnetic-texture coupled Josephson junction
• Magnetic Skyrmion Lattice by Fourier Transform Method
• Deformation of a Néel-type Skyrmion in a Weak Inhomogeneous Magnetic Field: Magnetization Ansatz and Interaction with a Pearl Vortex
• Majorana bound states with chiral magnetic textures