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 no trivial 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.
Topological rf SQUID with a frustrating pi junction for probing the Majorana bound state
TAFURI, Francesco;
2013
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 no trivial 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.File in questo prodotto:
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