Published October 31, 2021 | Version v1
Dataset Open

Ab initio modeling framework for Majorana transport in 2D materials: towards topological quantum computing

  • 1. Integrated Systems Laboratory, ETH Zürich, 8092 Zürich, Switzerland

* Contact person

Description

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.

Files

File preview

files_description.md

All files

Files (15.3 MiB)

Name Size
md5:5aca101eb3c048b26d6bb1165eb142c6
320 Bytes Preview Download
md5:2b3dd1aed6ba0c79db0b9ca34ed3af41
15.3 MiB Preview Download
md5:8e303a7a06be1c195625530e90b23d24
765 Bytes Preview Download

References

Journal reference
Y. Lee, T. Agarwal, M. Luisier, Proc. of IEDM 2020, 30.3.1-30.3.4 (2020), doi: 10.1109/IEDM13553.2020.9371923

Journal reference
Y. Lee, T. Agarwal, M. Luisier, Proc. of IEDM 2020, 30.3.1-30.3.4 (2020)