Terahertz disorder-localized rotational modes and lattice vibrational modes in the orientationally-disordered and ordered phases of camphor

Daniel V. Nickel, Michael T. Ruggiero, Timothy Michael Korter, Daniel M. Mittleman

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

The temperature-dependent terahertz spectra of the partially-disordered and ordered phases of camphor (C10H16O) are measured using terahertz time-domain spectroscopy. In its partially-disordered phases, a low-intensity, extremely broad resonance is found and is characterized using both a phenomenological approach and an approach based on ab initio solid-state DFT simulations. These two descriptions are consistent and stem from the same molecular origin for the broad resonance: the disorder-localized rotational correlations of the camphor molecules. In its completely ordered phase(s), multiple lattice phonon modes are measured and are found to be consistent with those predicted using solid-state DFT simulations.

Original languageEnglish (US)
Pages (from-to)6734-6740
Number of pages7
JournalPhysical Chemistry Chemical Physics
Volume17
Issue number10
DOIs
StatePublished - Mar 14 2015

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)

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