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Pedersen MO, Osterlund L, Mortensen JJ, et al. Diffusion of N adatoms on the Fe(100) surface. Phys Rev Lett. 2000;84(21):4898-901doi: 10.1103/PhysRevLett.84.4898.
Pedersen, M. O., Osterlund, L., Mortensen, J. J., Mavrikakis, M., Hansen, L. B., Stensgaard, I., Laegsgaard, E., Norskov, J. K., & Besenbacher, F. (2000). Diffusion of N adatoms on the Fe(100) surface. Physical review letters, 84(21), 4898-901. https://doi.org/10.1103/PhysRevLett.84.4898
Pedersen, et al. "Diffusion of N adatoms on the Fe(100) surface." Physical review letters vol. 84,21 (2000): 4898-901. doi: https://doi.org/10.1103/PhysRevLett.84.4898
Pedersen MO, Osterlund L, Mortensen JJ, Mavrikakis M, Hansen LB, Stensgaard I, Laegsgaard E, Norskov JK, Besenbacher F. Diffusion of N adatoms on the Fe(100) surface. Phys Rev Lett. 2000 May 22;84(21):4898-901. doi: 10.1103/PhysRevLett.84.4898. PMID: 10990826.
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Phys Rev Lett. 2000 May 22;84(21):4898-901. doi: 10.1103/PhysRevLett.84.4898.

Diffusion of N adatoms on the Fe(100) surface.

Physical review letters

Pedersen, Osterlund, Mortensen, Mavrikakis, Hansen, Stensgaard, Laegsgaard, Norskov, Besenbacher

Affiliations

  1. CAMP and Institute of Physics and Astronomy, University of Aarhus, DK 8000 Aarhus C, Denmark.

PMID: 10990826 DOI: 10.1103/PhysRevLett.84.4898

Abstract

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) = 4.3x10(12) s(-1), which is in quantitative agreement with the DFT calculations. The 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.

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