ISSN:
1434-6036
Keywords:
PACS. 68.35.Ja Surface and interface dynamics and vibrations - 65.50.+m Thermodynamic properties and entropy - 79.70.+q Field emission, ionization, evaporation, and desorption
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: The effective equations of motion for a surface atom in an anharmonic surface potential have been derived for dispersionless one-dimensional substrates. The system is equivalent to a non-linear damped oscillator (Duffing oscillator) with the forcing term depending on the form of the incident wave. Efficiency of harmonics generation, phonon reflection coefficients, effective local density of states, regions of chaotic motion and windows of periodic motion have been comparatively evaluated for the system subject to an oscillating external force and to the irradiation by a monochromatic phonon coming from the bulk. Comparison of the resonant desorption of the surface atom within a given time interval has been made for the same example of anharmonic surface potential in both types of perturbation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100510050792
Permalink
