| Full text | |
| Author(s): |
Ribeiro, H. B.
;
Villegas, C. E. P.
;
Bahamon, D. A.
;
Muraca, D.
;
Castro Neto, A. H.
;
de Souza, E. A. T.
;
Rocha, A. R.
;
Pimenta, M. A.
;
de Matos, C. J. S.
Total Authors: 9
|
| Document type: | Journal article |
| Source: | NATURE COMMUNICATIONS; v. 7, JUL 2016. |
| Web of Science Citations: | 23 |
| Abstract | |
Black phosphorus has recently emerged as a new layered crystal that, due to its peculiar and anisotropic crystalline and electronic band structures, may have important applications in electronics, optoelectronics and photonics. Despite the fact that the edges of layered crystals host a range of singular properties whose characterization and exploitation are of utmost importance for device development, the edges of black phosphorus remain poorly characterized. In this work, the atomic structure and behaviour of phonons near different black phosphorus edges are experimentally and theoretically studied using Raman spectroscopy and density functional theory calculations. Polarized Raman results show the appearance of new modes at the edges of the sample, and their spectra depend on the atomic structure of the edges (zigzag or armchair). Theoretical simulations confirm that the new modes are due to edge phonon states that are forbidden in the bulk, and originated from the lattice termination rearrangements. (AU) | |
| FAPESP's process: | 12/24227-1 - Optical properties and charge-transfer process studies for efficient organic photovoltaic cells: ab-initio simulations |
| Grantee: | César Enrique Pérez Villegas |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 11/01235-6 - Effects of dipolar interactions and surface in magnetic granular systems and magnetic nanoparticles on ferrogels |
| Grantee: | Diego Muraca |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 12/50259-8 - Graphene: photonics and opto-electronics: UPM-NUS collaboration |
| Grantee: | Antonio Helio de Castro Neto |
| Support Opportunities: | Research Projects - SPEC Program |
| FAPESP's process: | 15/11779-4 - Plasmonic and nonlinear effects in graphene coupled to optical waveguides |
| Grantee: | Christiano José Santiago de Matos |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 11/11973-4 - ICTP South American Institute for Fundamental Research: a regional center for theoretical physics |
| Grantee: | Nathan Jacob Berkovits |
| Support Opportunities: | Research Projects - Thematic Grants |