Probing single jumps of surface atoms

Vogl, G. ; Sladecek, M. ; Dattagupta, S. (2007) Probing single jumps of surface atoms Physical Review Letters, 99 (15). 155902_1-155902_4. ISSN 0031-9007

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Jumps of single atoms can be followed on their time and space scale (nanoseconds and Angstroms) by applying nuclear resonance scattering of synchrotron radiation. Here we develop the theory for jump diffusion in two-dimensional systems. Two types of phenomena are noteworthy: apparent acceleration of the nuclear decay and relaxation of hyperfine interactions, in particular, electric quadrupole interactions. The latter effect becomes for the first time one of significance and well measurable due to the inherent anisotropy of the surface. We show how, by way of motional narrowing, to distinguish between the motion of the probe atom itself and the motion of adatoms.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
Keywords:Diffusion Jumps; Quadrupole Interaction; Surface; Synchrotron Radiation; Mossbauer
ID Code:9122
Deposited On:29 Oct 2010 11:34
Last Modified:16 May 2016 18:58

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