Tuning the electronic structure from charge-transfer insulator to Mott-Hubbard and Peierls insulators in one-dimensional halogen-bridged mixed-metal compounds

H. Matsuzaki, K. Iwano, T. Aizawa, M. Ono, H. Kishida, M. Yamashita, H. Okamoto

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

The electronic structures of one-dimensional (1D) halogen-bridged mixed-metal compounds, [Ni1-xPdx(chxn)2X]X 2 (chxn= cyclohexanediamine; X=Cl,Br; 0≤x≤1), are investigated through optical and magnetic measurements. The results reveal that the system changes from charge-transfer (CT) insulator to Mott-Hubbard (MH) insulator at around x ∼0.3, and from MH insulator to Peierls insulator at x ∼0.9 with increasing x. From the analysis of optical conductivity spectra using the ID two-band extended Peierls-Hubbard model, electronic parameters such as Coulomb repulsion energy, pd hybridization, CT energy, and electron-lattice interaction are determined.

Original languageEnglish
Article number035204
Pages (from-to)035204-1-035204-6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume70
Issue number3
DOIs
Publication statusPublished - 2004 Jul 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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