Ab initio simulation framework for Majorana transport in 2D materials: towards topological quantum computing
| Autor: | Lee, Y., Agarwal, T., Luisier, M. |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Proc. of IEDM 2020, 30.3.1-30.3.4 (2020) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1109/IEDM13553.2020.9371923 |
| Popis: | We present an ab initio modeling framework to simulate Majorana transport in 2D semiconducting materials, paving the way for topological qubits based on 2D nanoribbons. By combining density-functional-theory and quantum transport calculations, we show that the signature of Majorana bound states (MBSs) can be found in 2D material systems as zero-energy modes with peaks in the local density-of-states. The influence of spin-orbit coupling and external magnetic fields on Majorana transport is studied for two relevant 2D materials, WSe2 and PbI2. To illustrate the capabilities of the proposed ab initio platform, a device structure capable of hosting MBSs is created from a PbI2 nanoribbon and carefully investigated. These results are compared to InSb nanowires and used to provide design guidelines for 2D topological qubits. Comment: 5 pages, 6 figures |
| Databáze: | arXiv |
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