Structure of the H-induced vacancy reconstruction of the (0001) surface ofberyllium.

Authors
Pohl, K Plummer, EW
Citation
K. Pohl et Ew. Plummer, Structure of the H-induced vacancy reconstruction of the (0001) surface ofberyllium., PHYS REV B, 59(8), 1999, pp. R5324-R5327
Citations number
24
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829 → ACNP
Volume
59
Issue
8
Year of publication
1999
Pages
R5324 - R5327
Database
ISI
SICI code
0163-1829(19990215)59:8<R5324:SOTHVR>2.0.ZU;2-0
Abstract
A unique chemisorption structure has been determined for the (root 3 x root 3)R30 degrees H-Be(0001) phase formed at a saturation coverage of 1 ML and T less than or equal to 270 K. The analysis of low-energy-electron diffrac tion data shows that 1/3 of the Be top layer atoms are removed to form a ho neycomb structure of Be vacancies. Each vacancy is decorated by three H ada toms bonded in tilted bridge sites with a H-Be bond length and angle of 1.5 3 Angstrom (+/- 0.2) and 42 degrees(+/- 10), respectively.