Use este identificador para citar ou linkar para este item:
http://hdl.handle.net/1843/42195| Tipo: | Artigo de Periódico |
| Título: | Stokes-anti-stokes correlation in the inelastic scattering of light by matter and generalization of the Bose-Einstein population function |
| Autor(es): | Carlos Alberto Parra Murillo Marcelo Paleologo Elefteriadis de França Santos Carlos Henrique Monken Ado Jorio de Vasconcelos |
| Resumo: | The Stokes and anti-Stokes components in the inelastic scattering of light are related to phonon statistics and have been broadly used to measure temperature and phonon lifetimes in different materials. However, correlation between the components is expected to change the Stokes/anti-Stokes intensity ratio, imposing corrections to the broadly used Bose-Einstein statistics. In this work the excitation power dependence of these scattering processes is theoretically described by an effective Hamiltonian that includes correlation between the Stokes and the anti-Stokes events. The model is used to fit available experimental results in three-dimensional diamond and two-dimensional graphene, showing that the phenomenon can significantly increase in the low-dimensional system under specific resonance conditions. By setting the scientific basis for the Stokes–anti-Stokes correlated phenomenon, the use of the Bose-Einstein population function to determine the inelastic scattering is generalized, providing a model to predict the conversion of optical phonons into heat or light, according to coupling constants and decay rates. The model applies to inelastic scattering in general. |
| Assunto: | Espalhamento Teorema de Stokes |
| Idioma: | eng |
| País: | Brasil |
| Editor: | Universidade Federal de Minas Gerais |
| Sigla da Instituição: | UFMG |
| Departamento: | ICX - DEPARTAMENTO DE FÍSICA |
| Tipo de Acesso: | Acesso Restrito |
| Identificador DOI: | https://doi.org/10.1103/PhysRevB.93.125141 |
| URI: | http://hdl.handle.net/1843/42195 |
| Data do documento: | 28-Mar-2016 |
| metadata.dc.url.externa: | https://journals.aps.org/prb/abstract/10.1103/PhysRevB.93.125141 |
| metadata.dc.relation.ispartof: | Physical Review B |
| Aparece nas coleções: | Artigo de Periódico |
Arquivos associados a este item:
Não existem arquivos associados a este item.
Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.