تقرير
Instability of the topological surface state in Bi$_2$Se$_3$ upon deposition of gold
| العنوان: | Instability of the topological surface state in Bi$_2$Se$_3$ upon deposition of gold |
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| المؤلفون: | Polyakov, A., Tusche, C., Ellguth, M., Crozier, E. D., Mohseni, K., Otrokov, M. M., Zubizarreta, X., Vergniory, M. G., Geilhufe, M., Chulkov, E. V., Ernst, A., Meyerheim, H. L., Parkin, S. S. P. |
| المصدر: | Physical Review B 95, 180202(R), 2017 |
| سنة النشر: | 2018 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science |
| الوصف: | Momentum resolved photoemission spectroscopy indicates the instability of the Dirac surface state upon deposition of gold on the (0001) surface of the topological insulator Bi$_2$Se$_3$. Based on the structure model derived from extended x-ray absorption fine structure experiments showing that gold atoms substitute bismuth atoms, first principles calculations provide evidence that a gap appears due to hybridization of the surface state with gold d-states near the Fermi level. Our findings provide new insights into the mechanisms affecting the stability of the surface state. Comment: 6 pages, 4 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.95.180202 |
| URL الوصول: | http://arxiv.org/abs/1809.03248 |
| رقم الأكسشن: | edsarx.1809.03248 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.95.180202 |
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