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Resonance effects in the Raman spectrum of CdGa 2 Se 4
Author(s) -
Parisini A.,
Lottici P. P.,
Razzetti C.,
Bacewicz R.
Publication year - 1986
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.2221340110
Subject(s) - sphalerite , raman spectroscopy , resonance (particle physics) , raman scattering , phonon , chalcopyrite , chemistry , condensed matter physics , atomic physics , mineralogy , physics , optics , pyrite , copper , organic chemistry
Resonance effects are observed in the Raman cross‐section of the defect chalcopyrite CdGa 2 Se 4 . The results indicate a strong resonance of the highest frequency E(LO) sphalerite‐like phonons in forbidden geometry, similar to the behaviour observed for zincblende‐like crystals. The forbidden scattering may be described through a Pröhlich intraband mechanism at the fundamental direct gap.