Topological rf SQUID with a frustrating π junction for probing the Majorana bound state

P. Lucignano; F. Tafuri; A. Tagliacozzo

doi:10.1103/PhysRevB.88.184512

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Topological rf SQUID with a frustrating π junction for probing the Majorana bound state

P. Lucignano, F. Tafuri, A. Tagliacozzo

DOI 10.1103/PhysRevB.88.184512 · Physical Review B

T1

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Abstract

Majorana bound states are predicted to appear as boundary states of the Kitaev model. Here we show that a π-Josephson junction, inserted in a topologically nontrivial model ring, sustains a Majorana bound state, which is robust with respect to local and nonlocal perturbations. The realistic structure could be based on a high-Tc superconductor tricrystal structure, similar to the one used to spot the d-wave order parameter. The presence of the Majorana bound state changes the ground state of the topologically nontrivial ring in a measurable way with respect to that of a conventional one.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown