We discuss the emergence of zero-energy Majorana modes ina disordered finite-length p-wave one-dimensional superconducting ring, pierced by a magnetic flux $Phi$ tuned at an appropriate value $Phi = Phi_*$. In the absence of fermion parity conservation, we evidence the emergence of the Majorana modes by looking at the discontinuities in the persistent current $ I [ Phi ]$ at $Phi = Phi_*$. By monitoring the discontinuities in $ I [ Phi ]$, we map out the region in parameter space characterized by the emergence of Majorana modes in the disordered ring.

Persistent current and zero-energy Majorana modes in a p-wave disordered superconducting ring

Nava A
;
GIULIANO, Domenico
2017-01-01

Abstract

We discuss the emergence of zero-energy Majorana modes ina disordered finite-length p-wave one-dimensional superconducting ring, pierced by a magnetic flux $Phi$ tuned at an appropriate value $Phi = Phi_*$. In the absence of fermion parity conservation, we evidence the emergence of the Majorana modes by looking at the discontinuities in the persistent current $ I [ Phi ]$ at $Phi = Phi_*$. By monitoring the discontinuities in $ I [ Phi ]$, we map out the region in parameter space characterized by the emergence of Majorana modes in the disordered ring.
2017
Disordered systems; Majorana fermions; Superconducting rings
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Descrizione: Andrea Nava, Rosa Giuliano, Gabriele Campagnano and Domenico Giuliano, Persistent current and zero-energy Majorana modes in a p -wave disordered superconducting ring, Phys. Rev. B 95, 155449, 2017. The published article is available at link http://link.aps.org/doi/10.1103/PhysRevB.95.155449; DOI: 10.1103/PhysRevB.95.155449
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11770/153542
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