- Tytuł:
- Two-Site Correlations in a Surface Layer Adsorbed on the Crystal
- Autorzy:
-
Wojtczak, L.
Zasada, I.
Le Bossé, J. C.
Lopez, J.
Rousseau, J. - Powiązania:
- https://bibliotekanauki.pl/articles/1891742.pdf
- Data publikacji:
- 1991-11
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
- 68.35.-p
- Opis:
- The incohorent scattering of electrons by layer adsorbed at a single crystal surface is determined by the Fourier transform of correlation functions of elements forming this layer. The model of the description of atoms or molecules adsorbed on the surface is formulated by the occupation operators which are represented by the pseudospin operators. The calculations of the correlation functions are performed by means of methods which consider a given pair of elements embedded in the effective field of remaining elements of the system while the interaction between the elements of the pair are taken in its exact form. Two approaches are presented here, i.e. the cumulant average and constant coupling approximations, and the case of binary chemisorption is considered in detail. The problem of the correlation symmetry is also discussed.
- Źródło:
-
Acta Physica Polonica A; 1991, 80, 5; 631-648
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł