| Full text | |
| Author(s): |
Manesco, A. L. R.
;
Weber, G.
;
Rodrigues Jr, D.
Total Authors: 3
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW B; v. 100, n. 12, p. 8-pg., 2019-09-09. |
| Abstract | |
It was recently proposed that the interface between a graphene nanoribbon in the canted antiferromagnetic quantum Hall state and a s-wave superconductor may present topological superconductivity, resulting in the appearance of Majorana zero modes [San-Jose et al., Phys. Rev. X 5, 041042 (2015)]. However, a description of the low-energy physics in terms of experimentally controllable parameters was still missing. Starting from a mean-field continuum model for graphene in proximity to a superconductor, we derive the low-energy effective Hamiltonian describing the interface of this heterojunction from first principles. A comparison between tight-binding simulations and analytical calculations with effective masses suggests that normal reflections at the interface must be considered in order to fully describe the low-energy physics. (AU) | |
| FAPESP's process: | 16/10167-8 - Investigation of electronic and topological properties of superconductor-graphene heterojunctions for applications in quantum computation devices |
| Grantee: | Antonio Lucas Rigotti Manesco |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |