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Electric-field-induced infrared spectra of a poly(methyl methacrylate) (PMMA) thin film have been collected in the temperature range between 77 and 297K by the difference FT-IR method using a cell with a BaF 2 /Al/PMMA (500nm)/Al layered structure. The observed temperature dependence suggests that the electric-field-induced spectra collected below 150K are due to the vibrational Stark effect...
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