X-RAY STUDY OF STEP MORPHOLOGY ON A W(110) SURFACE IN AIR
SCIE
SCOPUS
- Title
- X-RAY STUDY OF STEP MORPHOLOGY ON A W(110) SURFACE IN AIR
- Authors
- CHUNG, SM; JEONG, SM; KIM, CY; KIM, HW; LEE, KI BONG; CHUNG, JIN WOOK
- Date Issued
- 1992-10-01
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- Using a surface sensitive X-ray scattering technique, we demonstrate that an atomic-scale surface step structure can be investigated with a sample in air. This is made clear by the observation of distinct step peaks precisely at the positions expected from the surface step geometry using a vicinal Mo(031) surface. The technique was then adopted to probe step structures on a W(110) surface. It is found that the fine structure of a crystal truncation rod (CTR), where the vertical component of the momentum transfer varies, reveals distinct step peaks. These step features are interpreted in terms of a simple 1D model of a step structure, which shows that the surface contains steps with step heights of 1.4, 2, 4, and 7 atomic layers along the [001] direction. Results of a lineshape analysis of the in-plane and out-of-plane scans are discussed in terms of the height-height correlation lengths.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/22165
- DOI
- 10.1016/0039-6028(92)90722-I
- ISSN
- 0039-6028
- Article Type
- Article
- Citation
- SURFACE SCIENCE, vol. 276, no. 1-3, page. 353 - 359, 1992-10-01
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