In this work, we investigate a quantum-ring coupled to a topological superconductor, hosting Majorana bound states (MBSs). We study the MBSs effects over the spectrum and persistent current along the quantum-ring. To obtain physical quantities, we employ the Green's function formalism. We found that the presence of MBSs leads to dramatic changes in the quantum-ring spectrum by inducing particle-hole symmetry. On the other hand, we have obtained a substantial reduction of the persistent current in the strong coupling limit between ring and MBSs depending on the ring parity. These behaviors provide a measurable signature of MBSs. Our findings could be used as additional information on MBSs presence in these quantum systems.
@article{arxiv.1910.03680,
title = {Fingerprints of Majorana bound states in quantum-rings},
author = {F. G. Medina and J. P. Ramos-Andrade and L. Rosales and P. A. Orellana},
journal= {arXiv preprint arXiv:1910.03680},
year = {2020}
}