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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Edge phonons in black phosphorus

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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: 22
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 type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 15/11779-4 - Plasmonic and nonlinear effects in graphene coupled to optical waveguides
Grantee:Christiano José Santiago de Matos
Support type: Research Projects - Thematic Grants
FAPESP's process: 12/50259-8 - Graphene: photonics and opto-electronics: UPM-NUS collaboration
Grantee:Antônio Hélio de Castro Neto
Support type: Research Projects - SPEC Program
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 type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 11/11973-4 - ICTP South American Institute for Fundamental Research: a regional center for theoretical physics
Grantee:Nathan Jacob Berkovits
Support type: Research Projects - Thematic Grants