Journal
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
Volume 256, Issue 8, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssb.201800607
Keywords
cascade model; local modes; Raman spectroscopy; resonance; semiconductors
Categories
Funding
- US Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES), Division of Materials Science and Engineering [DE-FG02-07ER46386]
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Substitution of O in the ZnS lattice is observed to result in a doublet consisting of two local vibrational modes (LVMs) and a second order harmonic of the LVMs. The first order doublet is attributed to vibrational modes of a defect with trigonal (C-3v) symmetry. The results of temperature dependent resonant Raman scattering and anti-Stokes scattering support this assignment. The substitution of O in the lattice also leads to the presence of LVM + nLO combination modes, which are interpreted in terms of the cascade model and resonance effects.
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