Competition between electron-correlation in NiIII states and electron-phonon interaction in PdII-PdIV mixed-valence states in quasi-one-dimensional halogen-bridged mixed-metal complexes, Ni1-xPdx(chxn)2Br3

Toshio Manabe, Masahiro Yamashita, Takuya Kawashima, Hiroshi Okamoto, Hiroshi Kitagawa, Tadaoki Mitani, Koshiro Toriumi, Hiroshi Miyamae, Katsuya Inoue, Kyuya Yakushi

Research output: Contribution to journalConference articlepeer-review

16 Citations (Scopus)

Abstract

A series of single crystals of quasi-one-dimensional halogen-bridged Ni-Pd mixed-metal compounds, Ni1-xPdx(chxn)2Br3 (chxn=1R,2R-cyclohexanediamine) have been obtained by electrochemical oxidation methods. In order to investigate the competition between the electron-correlation in the NiIII states (SDW states) and the electron-phonon interaction in the PdIIPdIV mixed-valence states (CDW states) in the Ni-Pd mixed-metal compounds, the single-crystal electrical conductivities, IR, resonance Raman spectra, ESR, magnetic susceptibilities, and XPS, have been measured. The electrical conductivities of these compounds show semiconducting behavior with the conductivities maximized and the activation energies minimized at x=ca. 0.5. The IR, resonance Raman spectra, and XPS show that the pdII-pdIV mixed-valence states are influenced and approaching to the PdIII states with the increase of the NiIII components.

Original languageEnglish
Pages (from-to)106-115
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3145
DOIs
Publication statusPublished - 1997 Dec 1
Externally publishedYes
EventOptical Probes of Conjugated Polymers - San Diego, CA, United States
Duration: 1997 Jul 281997 Jul 30

Keywords

  • CDW
  • Electron-Correlation
  • Electron-Phonon Interaction
  • MX-Chain
  • SDW

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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