  We investigate theoretically the features of the Majorana hallmark in the
presence of Coulomb repulsion between two quantum dots describing a spinless
Aharonov-Bohm-like interferometer, where one of the dots is strongly coupled to
a Kitaev wire within the topological phase. Such a system has been originally
proposed without Coulomb interaction in J. of Appl. Phys. 116, 173701 (2014).
Our findings reveal that for dots in resonance, the ratio between the strength
of Coulomb repulsion and the dot-wire coupling changes the width of the
Majorana zero-bias peak for both Fano regimes studied, indicating thus that the
electronic interdots correlation influences the Majorana state lifetime in the
dot hybridized with the wire. Moreover, for the off-resonance case, the swap
between the energy levels of the dots also modifies the width of the Majorana
peak, which does not happen for the noninteracting case. The results obtained
here can guide experimentalists that pursuit a way of revealing Majorana
signatures.
