| Título: | Ultrafast atomic diffusion inducing a reversible (23?×23?)R30°?(3?×3?)R30° transition on Sn/Si(111)?B |
| Autores: | Abuín Herráez, Manuel |
| Tipo de documento: | texto impreso |
| Editorial: | American Physical Society, 2015-05-13 |
| Dimensiones: | application/pdf |
| Nota general: | info:eu-repo/semantics/restrictedAccess |
| Idiomas: | |
| Palabras clave: | Estado = Publicado , Materia = Ciencias: Física: Física de materiales , Materia = Ciencias: Física: Física del estado sólido , Tipo = Artículo |
| Resumen: |
Dynamical phase transitions are a challenge to identify experimentally and describe theoretically. Here, we study a new reconstruction of Sn on silicon and observe a reversible transition where the surface unit cell divides its area by a factor of 4 at 250 °C. This phase transition is explained by the 24-fold degeneracy of the ground state and a novel diffusive mechanism, where four Sn atoms arranged in a snakelike cluster wiggle at the surface exploring collectively the different quantum mechanical ground states. |
| En línea: | https://eprints.ucm.es/32917/1/Abuin%2001%20libre.pdf |
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