Adsorption of Xe atoms on metal surfaces: New insights from first-principles calculations

Details Adsorption of Xe atoms on metal surfaces: New insights from first-principles calculations Adsorption of Xe atoms on metal surfaces: New insights from first-principles calculations

2002-12-12

arxiv.org/abs/cond-mat/0212292v1

Phys. Rev. Lett. 90, 066104 (2003)

Physics

Condensed Matter

Materials Science

5 pages including 4 figure files. Related publications can be found at http://www.fhi-berlin.mpg.de/th/paper.html

Scientific paper

10.1103/PhysRevLett.90.066104

The adsorption of rare gases on metal surfaces serve as the paradigm of weak adsorption where it is typically assumed that the adsorbate occupies maximally coordinated hollow sites. Density-functional theory calculations using the full-potential linearized augmented plane wave method for Xe adatoms on Mg(0001), Al(111), Ti(0001), Cu(111), Pd(111), and Pt(111), show, however, that Xe prefers low-coordination on-top sites in all cases. We identify the importance of polarization and a site-dependent Pauli repulsion in actuating the site preference and the principle nature of the rare-gas atom--metal surface interaction.

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