Andreev conductance through a triangular-shaped quantum dot structure hosting Majorana bound states

摘要

The Andreev conductance in Delta -shaped quantum dots (QDs) system coupled with Majorana bound states (MBSs) is studied and resulting conductance spectrum displays resonant and non-resonant processes. These fluctuated resonances render features like insulating band, bonding (antibonding) in the low-bias region due to non-trivial role of interdot coupling tc and dots-MBSs coupling lambda. On comparing QD levels (?1,?2,?3), and the coupling between the MBSs, coherent oscillating dynamics of an electron between the nanowire and the QDs can be portrayed. The insulating band is robust against lambda, but highly sensitive to tc, which causes to increase (decrease) the conductance. We can claim that under finite bias voltage, transport can facilitate the researchers to expose the essential features of the Majorana fermion in such closed systems composed of MBSs.