Diffusion of N adatoms on the Fe(100) surface
2000 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 84, no 21, 4898-4901 p.Article in journal (Refereed) Published
The diffusion of individual N adatoms on Fe(100) has been studied using scanning tunneling microscopy and ab initio density functional theory (DFT) calculations. The measured diffusion barrier for isolated N adatoms is E-d = (0.92 +/- 0.04) eV, with a prefactor of nu(0) = 4.3 x 10(12) s(-1), which is in quantitative agreement with the DFT calculations. Thr; diffusion is strongly coupled to lattice distortions. and. as a consequence, the presence of other N adatoms introduces an anisotropy in the diffusion. Based on experimentally determined values of the diffusion barriers and adsorbate-adsorbate: interactions, the potential energy surface experienced by a N adatom is determined.
Place, publisher, year, edition, pages
2000. Vol. 84, no 21, 4898-4901 p.
Condensed Matter Physics Other Physics Topics
IdentifiersURN: urn:nbn:se:uu:diva-235932DOI: 10.1103/PhysRevLett.84.4898ISI: 000087114400029OAI: oai:DiVA.org:uu-235932DiVA: diva2:762461