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Material Designs and New Physical Properties in MX- and MMX-Chain Compounds

  • Masahiro Yamashita
  • Hiroshi Okamoto

Table of contents

  1. Front Matter
    Pages i-ix
  2. S. Takaishi, M. Yamashita
    Pages 1-6
  3. MX-Chain Compounds

    1. Front Matter
      Pages 7-7
    2. S. Takaishi, M. Yamashita
      Pages 31-37
    3. S. Takaishi, M. Yamashita
      Pages 39-54
    4. Hiroyuki Matsuzaki, Hiroshi Okamoto
      Pages 55-82
    5. Kaoru Iwano
      Pages 111-148
  4. MMX-Chain Compounds

    1. Front Matter
      Pages 149-149
    2. Hiroaki Iguchi, Shinya Takaishi, Masahiro Yamashita
      Pages 207-230
    3. Hiroyuki Matsuzaki, Hiroshi Okamoto
      Pages 231-242
    4. Kenji Yonemitsu
      Pages 243-264
  5. Back Matter
    Pages 265-270

About this book

Introduction

This is the first book to comprehensively address the recent developments in both the experimental and theoretical aspects of quasi-one-dimensional halogen-bridged mono- (MX) and binuclear metal (MMX) chain complexes of Pt, Pd and Ni. These complexes have one-dimensional electronic structures, which cause the various physical properties as well as electronic structures. In most MX-chain complexes, the Pt and Pd units are in M(II)-M(IV) mixed valence or charge density wave (CDW) states due to electron-phonon interactions, and Ni compounds are in Ni(III) averaged valence or Mott-Hubbard states due to the on-site Coulomb repulsion. More recently, Pd(III) Mott-Hubbard (MH) states have been realized in the ground state by using the chemical pressure. Pt and Pd chain complexes undergo photo-induced phase transitions from CDW to MH or metal states, and Ni chain complexes undergo photo-induced phase transitions from MH to metal states. Ni chain complexes with strong electron correlations show tremendous third-order optical nonlinearity and nonlinear electrical conductivities. They can be explained theoretically by using the extended Peierls-Hubbard model. For MMX-chain complexes, averaged valence, CDW, charge polarization, and alternating charge polarization states have been realized by using chemical modification and external stimuli, such as temperature, photo-irradiation, pressure, and water vapor. All of the electronic structures and phase transitions can be explained theoretically.

Keywords

Halogen bridged MMX compounds MX compounds mixed valence

Editors and affiliations

  • Masahiro Yamashita
    • 1
  • Hiroshi Okamoto
    • 2
  1. 1., Departement of ChemistryTohoku UniversitySendaiJapan
  2. 2.KashiwaJapan

Bibliographic information

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