| Автор | G V Benemanskaya |
| Автор | D V Daineka |
| Автор | G E Frank-Kamenetskaya |
| Дата выпуска | 1999-09-06 |
| dc.description | Adsorption of K on the Si(111)7 × 7 surface has been investigated in the submonolayer coverage range at room temperature. The method of threshold photoemission spectroscopy using s- and p-polarized light excitation was employed for studying the evolution of surface electronic structure near the Fermi level, the work function and the ionization energy. A qualitative change in character of band structure has been observed, depending on K coverage. Suppression of metallicity of the Si(111)7 × 7 surface was found at the initial stage of K adsorption. One surface band A<sub>1</sub> below the VBM was revealed at low coverage. Increasing K coverage has led to both the appearance of the K-induced band A<sub>2</sub> and significant movement of the band towards the Fermi level. The K/Si(111)7 × 7 interface was found to be semiconducting-like up to saturation coverage. Near saturation, the Fermi level is seen to cross the K-induced band A<sub>2</sub>. Such surface band structure is identified as being metallic-like. Results indicate metallization via adlayer accompanied by Fermi level pinning. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Development of electronic band structure of the K-adsorbed Si(111)7 × 7 surface |
| Тип | paper |
| DOI | 10.1088/0953-8984/11/35/306 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 11 |
| Первая страница | 6679 |
| Последняя страница | 6684 |
| Аффилиация | G V Benemanskaya; A F Ioffe Physicotechnical Institute of the Russian Academy of Sciences, St Petersburg, 194021, Russia |
| Аффилиация | D V Daineka; A F Ioffe Physicotechnical Institute of the Russian Academy of Sciences, St Petersburg, 194021, Russia |
| Аффилиация | G E Frank-Kamenetskaya; A F Ioffe Physicotechnical Institute of the Russian Academy of Sciences, St Petersburg, 194021, Russia |
| Выпуск | 35 |
