Carlos L. Trallero Giner | Faculty of Physics/University of Havana - Cuba
Parafermionic excitations in superconducting fractional quantum Hall edge states
| Full text | |
| Author(s): |
Teixeira, Raphael L. R. C.
[1]
;
Dias da Silva, V, Luis G. G.
Total Authors: 2
|
| Affiliation: | [1] V, Univ Sao Paulo, Inst Fis, CF 66318, BR-05315970 Sao Paulo, SP - Brazil
Total Affiliations: 1
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW RESEARCH; v. 3, n. 3 JUL 2 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
Parafermionic zero modes, Z(n)-symmetric generalizations of the well-known Z(2) Majorana zero modes, can emerge as edge states in topologically nontrivial strongly correlated systems displaying fractionalized excitations. In this paper, we investigate how signatures of parafermionic zero modes can be detected by its effects on the properties of a quantum dot tunnel-coupled to a system hosting such states. Concretely, we consider a strongly correlated one-dimensional fermionic model supporting Z(4) parafermionic zero modes coupled to an interacting quantum dot at one of its ends. By using a combination of density matrix renormalization group calculations and analytical approaches, we show that the dot's zero-energy spectral function and average occupation numbers can be used to distinguish between trivial, Z(4) and 2 x Z(2) phases of the system. The present work opens the prospect of using quantum dots as detection tools to probe nontrivial topological phases in strongly correlated systems. (AU) | |
| FAPESP's process: | 19/11550-8 - Parafermionic modes in correlated electron systems |
| Grantee: | Raphael Levy Ruscio Castro Teixeira |
| Support Opportunities: | Scholarships in Brazil - Doctorate |