Correlation field splitting of intramolecular vibrations of crystalline tetracene in terahertz region

Tomoaki Yago, Youichi Ishikawa, Hiromasa Ito, Hiromasa Tanaka, Eunsang Kwon, Kenkichi Sakamoto, Ken Suto, Minro Watanabe, Jun Ichi Nishizawa

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The temperature dependence of terahertz (THz) absorption was observed for molecular crystals of tetracene using the Fourier transform infrared (FT-IR) spectroscopy. Over the frequency range of 1 to 6 THz (33 to 200cm-1), THz absorptions corresponding to phonon and intramolecular vibrational modes were confirmed. Furthermore, the intramolecular vibrational modes exhibited correlation field splitting that originated from crystallization. A temperature-induced phase transition was successfully detected for the intramolecular vibrational modes of tetracene, even in powde form. Our results showed that these THz absorptions are highly sensitive to the molecular orientations within the crystal.

Original languageEnglish
Pages (from-to)4145-4150
Number of pages6
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume44
Issue number6 A
DOIs
Publication statusPublished - 2005 Jun 1
Externally publishedYes

Keywords

  • Correlation field splitting
  • Molecular crystal
  • Phase transition
  • Temperature effect
  • Terahertz absorption
  • Tetracene

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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