| Texto completo | |
| Autor(es): |
Manesco, A. L. R.
;
Weber, G.
;
Rodrigues Jr, D.
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW B; v. 100, n. 12, p. 8-pg., 2019-09-09. |
| Resumo | |
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) | |
| Processo FAPESP: | 16/10167-8 - Investigação de propriedades eletrônicas e topológicas de heterojunções supercondutor-grafeno para aplicações em dispositivos de computação quântica |
| Beneficiário: | Antonio Lucas Rigotti Manesco |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado Direto |