Influence of Correlated Thermal Vibrations on Temperature Dependence of Surface Peak

• Authors: T. Gwizdałła , J. Czerbniak
• Languages of publication: EN

Abstracts

EN

The influence of correlation between thermal displacements of atoms in string on the calculated Rutherford backscattering spectra under channelling conditions was studied. This correlation was incorporated into the existing Monte Carlo computer code by means of sampling the displacements from distribution transformed by the variance-covariance matrix. Various methods of implementing the correlation into calculation were used. As a result the deformation of energy spectrum was obtained. The explicit decrease in surface peak due to the correlation was observed. The significance of this effect decreases with increasing temperature. Calculation were performed in a wide region of temperatures, up to the melting point.

Keywords

EN

61.80.Mk; 63.20.-e

Discipline

• 63.20.-e: Phonons in crystal lattices(for phonons in superconductors, see 74.25.Kc; see also 43.35.Gk Phonons in crystal lattice, quantum acoustics—in Acoustics Appendix)

• Journal: Acta Physica Polonica A
• Year: 1996
• Volume: 89
• Issue: 1
• Pages: 61-67

Dates

published

1996-01

received

1995-05-09

(unknown)

1995-09-22

Contributors

author

T. Gwizdałła

• Dept. of Solid State Physics, University of Łódź, Pomorska 149/153, 90-236 Łódź, Poland

author

J. Czerbniak

• Dept. of Solid State Physics, University of Łódź, Pomorska 149/153, 90-236 Łódź, Poland

Identifiers

DOI

10.12693/APhysPolA.89.61