Publicação
Melting of a two-dimensional binary cluster of charged particles confined in a parabolic trap
| Resumo: | Melting of a finite size binary system consisting of two types of particles having different charges and/or masses, confined in a two-dimensional (2D) parabolic trap, is studied. The melting temperature is obtained for different values of the ratio between the charges and/or masses of the two types of particles. The two types of particles melt at different temperatures; e.g., particles with smaller charge melt first. The importance of the commensurate/incommensurate configurations and the different normal modes to the melting phenomenon is studied. When the ground state consists of a nonsymmetric arrangement of particles new thermally induced structural phase transitions are found. In addition, a remarkable temperature induced spatial separation of the two types of particles is found. |
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| Autores principais: | Ferreira, Wandemberg Paiva |
| Outros Autores: | Munarin, Felipe de Freitas; Farias, Gil de Aquino; Peeters, Francois Maria Leopold |
| Assunto: | Binary finite system Particles with distinct charges Particles with distinct masses |
| Ano: | 2023 |
| País: | Brasil |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | IBICT |
| Idioma: | inglês |
| Origem: | Oasisbr |
| Resumo: | Melting of a finite size binary system consisting of two types of particles having different charges and/or masses, confined in a two-dimensional (2D) parabolic trap, is studied. The melting temperature is obtained for different values of the ratio between the charges and/or masses of the two types of particles. The two types of particles melt at different temperatures; e.g., particles with smaller charge melt first. The importance of the commensurate/incommensurate configurations and the different normal modes to the melting phenomenon is studied. When the ground state consists of a nonsymmetric arrangement of particles new thermally induced structural phase transitions are found. In addition, a remarkable temperature induced spatial separation of the two types of particles is found. |
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