Possible low-temperature phase transition of Langmuir-Blodgett films of a charge-transfer complex detected by ESR

Keiichi Ikegami, Shin Ichi Kuroda, Tomoyuki Akutagawa, Taro Konuma, Takayoshi Nakamura, Mutsuyoshi Matsumoto, Sachio Horiuchi, Hideki Yamochi, Gunzi Saito

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The electron spin resonance (ESR) measurements made on the highly conducting Langmuir-Blodgett (LB) films of a charge-transfer complex of bis(ethylenedioxy)tetrathiafulvalene (BO) and decyltetracyanoquinodimethane (C10TCNQ), mixed with icosanoic acid, revealed microscopically the metallic nature of the system in a wide temperature range. Further, an anomalous increase in the ESR linewidth was detected around 140 K. To elucidate the origin of this anomaly, in situ ESR experiments upon annealing at low temperatures have been performed. The temperature dependence of the infrared spectrum has been also measured. The obtained results indicate a possible low-temperature phase transition of the present conducting LB system.

Original languageEnglish
Pages (from-to)391-394
Number of pages4
JournalThin Solid Films
Volume327-329
Issue number1-2
DOIs
Publication statusPublished - 1998 Jan 1
Externally publishedYes

Keywords

  • Charge-transfer complex
  • Conducting organic thin-film
  • Electron spin resonance
  • Infrared absorption spectroscopy
  • Langmuir-Blodgett film
  • Phase transition

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Possible low-temperature phase transition of Langmuir-Blodgett films of a charge-transfer complex detected by ESR'. Together they form a unique fingerprint.

  • Cite this

    Ikegami, K., Kuroda, S. I., Akutagawa, T., Konuma, T., Nakamura, T., Matsumoto, M., Horiuchi, S., Yamochi, H., & Saito, G. (1998). Possible low-temperature phase transition of Langmuir-Blodgett films of a charge-transfer complex detected by ESR. Thin Solid Films, 327-329(1-2), 391-394. https://doi.org/10.1016/S0040-6090(98)00660-9