Collapse of the Fano Resonance Caused by the Nonlocality of the Majorana State

Abstract

One of the main features of the Majorana state, which attracts a considerable current interest to these excitations in solid-state systems, is related to its nonlocal character. It is demonstrated that the direct consequence of such nonlocality is the collapse of the Fano resonance manifesting itself in the conductance of an asymmetric interference device, the arms of which are connected by a one-dimensional topological superconductor. In the framework of the spinless model, it is shown that the predicted effect is associated with an increase in the multiplicity of the degeneracy of the zero-energy state of the structure arising at a specific case of the Kitaev model. Such an increase leads to the formation of a bound state in the continuum.

arXiv comment6 pages, 4 figures

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Cited by in corpus (5)

• Topological superconductivity and Majorana states in low-dimensional systems
• Aharonov-Bohm interference as a probe of Majorana fermions
• Manifestation of Majorana modes overlap in the Aharonov-Bohm effect
• Formation of droplets of the order parameter and superconductivity in inhomogeneous Fermi-Bose mixtures (Brief review)
• Single-electron emission from degenerate quantum levels