Double resonant tunneling due to the nonlocal coupling of Majorana bound states to the quantum dot system
College of Sciences, Northeastern University, 110819, Shenyang, China
2 Basic Department, Shenyang Institute of Engineering, 110136, Shenyang, China
Accepted: 5 January 2022
Published online: 16 January 2022
We investigate the conductance properties in the quantum-dot structure with the nonlocal coupling of Majorana bound states (MBSs) to the dot. Results show that two molecular states of the MBS-coupled quantum dot can be degenerate at the Fermi level, in the case of appropriate structural parameters. Interestingly, the level degeneracy exactly leads to the occurrence of resonant tunneling. Further investigation demonstrates that double resonant tunneling phenomenon occurs as local magnetic flux is incorporated. Moreover, the Coulomb interaction in this system makes the double resonant tunneling more apparent. We believe that these results can help increase understanding of the quantum transport characteristics due to the nonlocal coupling between the quantum dot and MBSs.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2022