Surface morphology and electronic structure of Ni/Ag(100)
| Autor: | D. A. Hite, Phillip Sprunger, Heike Geisler, M. M. Howard, D. M. Zehner, Orhan Kizilkaya, Carl A. Ventrice |
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| Rok vydání: | 2000 |
| Předmět: |
Materials science
Annealing (metallurgy) chemistry.chemical_element Angle-resolved photoemission spectroscopy Surfaces and Interfaces Electronic structure Condensed Matter Physics Synchrotron Surfaces Coatings and Films law.invention Nanoclusters Crystallography Nickel chemistry law Scanning tunneling microscope Surface states |
| Zdroj: | Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 18:1950-1954 |
| ISSN: | 1520-8559 0734-2101 |
| DOI: | 10.1116/1.582452 |
| Popis: | The growth morphology and electronic structure of Ni on Ag(100) has been studied with scanning tunneling microscopy (STM) and synchrotron based angle resolved photoemission spectroscopy. At deposition temperatures at or below 300 K, STM reveals Ni cluster growth on the surface along with some subsurface growth. Upon annealing to 420 K, virtually all Ni segregates into the subsurface region forming embedded nanoclusters. The electronic structure of Ni d bands in the unannealed surface shows dispersion only perpendicular to the surface whereas the annealed surface has Ni d bands that exhibit a three-dimensional-like structure. This is a result of the increased Ni d–Ag sp hybridization bonding and increased coordination of the embedded Ni nanoclusters. |
| Databáze: | OpenAIRE |
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