Answers are grounded in this paper and cite their sources.
A two-parameter expression for the local mode vibration frequency is useful for predicting the variation of frequency with impurity mass over a wide mass range in GaP and GaAs. The expression is valid for materials with small but non-zero effective charge.
No takes yet. Share an insight, caveat, or question.
Julian Allen (1970) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: