Work

Multilayer relaxation of the Mg(0001) surface

Year: 1993

Type: article

Abstract: We have Investigated the interplanar relaxation of the clean (0001)-(1 × 1) surface of magnesium at 100 K using a dynamical LEED I-V analysis. In contrast to almost all other metal surfaces, an expansion has been observed for the first interlayer spacing of this clean surface. Using an extended database, the results indicate that the first three interlayer spacings are relaxed from the bulk value by Δd12 = +1.9 ± 0.3%, Δd23 = +0.8 ± 0.4%, and Δd34 = −0.4 ± 0.5%. A comparison of this observed multi relaxation with experimental and theoretical results for similar free-electron closepacked metal surfaces, e.g. Al(111), suggests that a surface expansion is a normal property of high electron density simple metals.

Source: Surface Science

DOI: 10.1016/0039-6028(93)90004-4

Authors: P.T. Sprunger, K. Pohl, H.L. Davis, E.W. Plummer

Institutions: University of Pennsylvania, Oak Ridge National Laboratory, University of Tennessee at Knoxville

Language: English

Topic: Surface and Thin Film Phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,340

Funders: National Science Foundation, U.S. Department of Energy, Division of Materials Research, Oak Ridge National Laboratory