Back to Search
Start Over
Tunable transport through a quantum dot chain with side-coupled Majorana bound states
- Source :
- Journal of Applied Physics. 116:103704
- Publication Year :
- 2014
- Publisher :
- AIP Publishing, 2014.
-
Abstract
- We investigate the transport properties of a quantum dot (QD) chain side-coupled to a pair of Majorana bound states (MBSs). It is found that the zero-bias conductance is tightly dependent on the parity of QD number. First, if a Majorana zero mode is introduced to couple to one QD of the odd-numbered QD structure, the zero-bias conductance is equal to e22h, but the zero-bias conductance will experience a valley-to-peak transition if the Majorana zero mode couples to the different QDs of the even-numbered QD structure. On the other hand, when the inter-MBS coupling is nonzero, the zero-bias conductance spectrum shows a peak in the odd-numbered QD structure, and in the even-numbered QD structure one conductance valley appears at the zero-bias limit. These results show the feasibility to manipulate the current in a multi-QD structure based on the QD-MBS coupling. Also, such a system can be a candidate for detecting the MBSs.
Details
- ISSN :
- 10897550 and 00218979
- Volume :
- 116
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Physics
- Accession number :
- edsair.doi...........58cb247a46e3b78539165a9c0ded9cd3