Electron wave function at a vicinal surface: switch from terrace to step modulation
The Cu(111) surface state has been mapped for vicinal surfaces with variable step densities by angle-resolved photoemission. Using tunable synchrotron radiation to vary the Ic dependence perpendicular to the surface, as well as the k(\\) dependence, we find a switch between two qualitatively differe...
| Autores: | , , , , , , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2000 |
| País: | España |
| Recursos: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/59415 |
| Acesso em linha: | https://hdl.handle.net/20.500.14352/59415 |
| Access Level: | acceso abierto |
| Palavra-chave: | 538.9 Angle-Resolved Photoemission State Electrons Metal-Surfaces Cu(111) Spectroscopy: Confinement Linewidths Atoms Física de materiales |
| Resumo: | The Cu(111) surface state has been mapped for vicinal surfaces with variable step densities by angle-resolved photoemission. Using tunable synchrotron radiation to vary the Ic dependence perpendicular to the surface, as well as the k(\\) dependence, we find a switch between two qualitatively different regimes at a miscut of 7 degrees (17 Angstrom terrace width). For larger miscut angles the step modulation of the wave function dominates, and for smaller miscut angles the terrace modulation dominates. These observations resolve an apparent inconsistency between prior photoemission and STM results. |
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