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Simple Model Calculations for Optical Constants of Copper
Author(s) -
Ahuja A. K.,
Auluck S.,
Joshi S. K.
Publication year - 1985
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221300224
Subject(s) - simple (philosophy) , copper , matrix (chemical analysis) , interpretation (philosophy) , variation (astronomy) , relaxation (psychology) , chemistry , mathematics , statistical physics , computational chemistry , thermodynamics , physics , computer science , psychology , social psychology , philosophy , organic chemistry , epistemology , chromatography , astrophysics , programming language
A simple s‐d band model is used for the interpretation of ϵ 2 (ω) for copper. Fitting simple polynomials for transition matrix elments, analytical expressions are obtained for ϵ 2 (ω) in terms of band parameters of the s‐d model. This expression is used to study the effect of matrix elements and variation of relaxation energy on ϵ 2 (ω) of copper. It is shown that such a simple model is sufficient to study such a variation and, therefore, to study the qualitative variation of ϵ 2 (ω). The model is also used to explain the peaks in dϵ 2 (ω)/dω curve successfully. The effect of hybridization amongst s and d bands is also taken into account for the calculation of transition matrix elements and the resulting effects in ϵ 2 (ω) are calculated.