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- W2034212259 abstract "Abstract A raman study of the phase transition in GMO is reported. The use of an iodine filter has allowed the study of a dynamic low-frequency excitation (LFE) previously seen only with neutrons. The anomalous behavior of the LFE and the 47 cm−1 Fleury doublet is analyzed using a three-coupled-modes formalism. The two doublet modes, m1 and m2 are found to be hybridized and to cross at ∼250° K. The lower mode, m1, is found to be coupled to the LFE, to be strongly damped, and to vanish above the phase transition; m2 is not found to be coupled to the phase transition in any way or to be significantly damped other than through hybridization with m1. Finally, the analysis suggests that the LFE may be a thermally activated tunnelling mode and suggests the existence of a fluctuation regime over a wide temperature range about Tc." @default.
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- W2034212259 date "1981-10-01" @default.
- W2034212259 modified "2023-09-26" @default.
- W2034212259 title "Origin of the anomalous behavior of low frequency A1modes in gadolinium molybdate" @default.
- W2034212259 doi "https://doi.org/10.1080/00150198108218160" @default.
- W2034212259 hasPublicationYear "1981" @default.
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