| Full text | |
| Author(s): |
Silva, W. C.
;
Mizobata, W. N.
;
Sanches, J. E.
;
Ricco, L. S.
;
Shelykh, I. A.
;
de Souza, M.
;
Figueira, M. S.
;
Vernek, E.
;
Seridonio, A. C.
Total Authors: 9
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW B; v. 105, n. 23, p. 8-pg., 2022-06-24. |
| Abstract | |
We theoretically analyze the Fano interference in a single impurity multi-Weyl semimetal hybrid system and show the emergence of the topological charge Fano effect in the bulk local density of states. In multi-Weyl semimetals, the number of Fermi arcs at the system boundaries is determined by the topological charge J, a direct consequence of the "bulk-boundary" correspondence principle. Analogously, we find that J also modulates the bulk Fano profile of the system with an embedded quantum impurity. Thus by increasing J, the Fano line shape evolves from resonant, typical for J = 1 (single Weyl), towards antiresonant, extrapolating to the so-called hyper Weyl semimetals with J >> 1. Specially for the maximum case protected by the rotational symmetry C-2j=6, namely, the J = 3 (triple Weyl), which acquires asymmetric Fano profile, the Fano parameter absolute value is predicted to be tan(C-2J=6), where C-2J (360 degrees/2J) defines the rotational angle. Hence, the Fano discretization in the J term introduces the topological charge Fano effect in multi-Weyl semimetals. We also suggest a transport device where we expect that the proposed Fano effect could be detected. (AU) | |
| FAPESP's process: | 18/09413-0 - Proposal of a Quantum Phase Transition in 3D Dirac-Weyl topological semimetals: qubit storage on the grounds of bound states in the continuum |
| Grantee: | Antonio Carlos Ferreira Seridonio |
| Support Opportunities: | Regular Research Grants |