Far-infrared optical response of neutral-ionic phase transition in an organic charge-transfer complex

Y. Okimoto, S. Horiuchi, E. Saitoh, R. Kumai, Y. Tokura

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)

Abstract

The far-infrared optical response of neutral-ionic (N-I) phase transition in an organic charge-transfer complex was analyzed. The infrared optical spectra was investigated for a charge-transfer complex of tetrathiafulvalene and 2-bromo-3,5,6-trichloro-p-benzoquinone undergoing N-I transition at 68 K. Results showed that the far-infrared reflectivity spectrum was transformed into a Drude-like reflectance band edging around 100 cm-1. The optical conductivity showed an anomalous peak around 10 cm-1. The far-infrared absorption and its temperature dependence were proved to be relevant to the gigantic dielectric response.

Original languageEnglish
Article number187401
Pages (from-to)1874011-1874014
Number of pages4
JournalPhysical Review Letters
Volume87
Issue number18
Publication statusPublished - 2001 Oct 29

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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