| Autor: |
Hiroshi Daimon, M. A. Van Hove, Charles S. Fadley, Zaixin Wang, Yulin Chen, Francisco Palomares, Zahid Hussain, Ajith Kaduwela, R. X. Ynzunza, E. D. Tober |
| Rok vydání: |
1999 |
| Předmět: |
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| Zdroj: |
Surface Science. 441:301-310 |
| ISSN: |
0039-6028 |
| DOI: |
10.1016/s0039-6028(99)00788-8 |
| Popis: |
The authors have studied the atomic structure of the clean W(110) surface by means of site-resolved scanned-angle W4f{sub 7/2} photoelectron diffraction (PD) data obtained over nearly the full 2{pi} solid angle above the surface. Prior to the availability of high-brightness sources such as the Advanced Light Source, such large high-resolution data sets were prohibitively time consuming to obtain. The well characterized W(110) system was used as a reference case to check the accuracy of structure determinations from such scanned-angle data via R-factor comparisons of experiment with theoretical multiple scattering calculations. The photoelectron kinetic energy of {approximately}40 eV used was also lower than in many prior PD studies, providing further challenges to theory. The influence of various non-structural theoretical input parameters (e.g., scattering phase shifts, electron inelastic attenuation length, and inner potential) was thus also assessed. A final optimized structure is presented, together with comments on the future applications of this method. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect