Topological Correlations in a Layer Adsorbed on a Crystal Surface

• Authors: L Wojtczak , I Zasada , J. C Bosse Le , J Lopez , J Rousseau

Abstracts

EN

The incoherent scattering of electrons by a layer adsorbed at a single crystal surface is determined by the topological correlations of elements forming the adsorbed layer. The model for the description of atoms or molecules adsorbed on the surface is formulated in terms of occupation operators which are expressed in terms of pseudospin operators with a given spin value. The correlations can be determined by the fluctuation dissipation theorem in connection with the susceptibility or given directly by means of the Green functions properly chosen. An example of the topological or chemical disorder of two components is considered in detail. The calculations of the topological correlations allow us to find the incoherent scattering amplitude as a function of the surface coverage which can be experimentally detected.

• Publisher: Wydawnictwo Uniwersytetu Łódzkiego
• Journal: Acta Physicae Superficierum
• Year: 1990
• Volume: 1

Dates

published

1990

Contributors

author

L Wojtczak

author

I Zasada

author

J. C Bosse Le

author

J Lopez

author

J Rousseau

other

University of Łódź Institute of Physics

other

Bat 203 Laboratoire de Physique des Interfaces

Identifiers

URI

http://hdl.handle.net/11089/15889