Abstract
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 language | English |
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Pages (from-to) | 189-196 |
Number of pages | 8 |
Journal | journal of the physical society of japan |
Volume | 71 |
Issue number | 1 |
DOIs | |
Publication status | Published - Jan 2002 |
Keywords
- Charge density wave
- Continuum model
- MMX chain
- Soliton
ASJC Scopus subject areas
- Physics and Astronomy(all)