Soliton Excitations in Halogen-Bridged Mixed-Valence Binuclear Metal Complexes

Shoji Yamamoto, Masanori Ichioka

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12 Citations (Scopus)


Motivated by recent stimulative observations in halogen (X)-bridged binuclear transition-metal (M) complexes, which are referred to as MMX chains, we study solitons in a one-dimensional three-quarter-filled charge-density-wave system with both intrasite and intersite electron-lattice couplings. Two distinct ground states of MMX chains ate are reproduced and the soliton excitations on them are compared. In the weak-coupling region, all the solitons are degenerate to each other and are uniquely scaled by the band gap, whereas in the strong-coupling region, they behave differently deviating from the scenario in the continuum limit. The soliton masses are calculated and compared with those for conventional mononuclear MX chains.

Original languageEnglish
Pages (from-to)189-196
Number of pages8
Journaljournal of the physical society of japan
Issue number1
Publication statusPublished - Jan 2002


  • Charge density wave
  • Continuum model
  • MMX chain
  • Soliton

ASJC Scopus subject areas

  • General Physics and Astronomy


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