| Full text | |
| Author(s): |
Sandoval, M. A. Toloza
;
Araujo, A. L.
;
de Lima, Crasto
;
Sao, A. Fazzio
Total Authors: 4
|
| Document type: | Journal article |
| Source: | PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES; v. 165, p. 6-pg., 2024-09-12. |
| Abstract | |
Recently, synthesis and experimental research of fractalized materials has evolved in a paradigmatic crossroad with topological states of matter. Here, we present a theoretical investigation of the helical edge transport in Sierpi & nacute;ski carpets (SCs), combining the Bernevig-Hughes-Zhang model with the Landauer transport framework. By starting from a pristine two-dimensional topological insulator, the results reveal vanishing and reentrant resonant transport modes enabled for increased SC fractal generation. We observe that fractal with superior hierarchy inherits characteristics due to self-similarity and present conductance patterns resembling a miniband transport picture with fractal fingerprints. Real-space mapping of emerging resonant and antiresonant states provides an unprecedented view of helical-edge currents encoded in these intricate geometries and their multiple edges, underscoring the significance and consistency of our findings. (AU) | |
| FAPESP's process: | 22/08478-6 - Investigation of topological boundary states for design of quantum devices |
| Grantee: | Augusto de Lelis Araújo |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 23/12336-5 - Native defects and amorphous driven properties in 2D materials |
| Grantee: | Augusto de Lelis Araújo |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 17/02317-2 - Interfaces in materials: electronic, magnetic, structural and transport properties |
| Grantee: | Adalberto Fazzio |
| Support Opportunities: | Research Projects - Thematic Grants |