Local excitations in mixed-valence bimetal chains

Details Local excitations in mixed-valence bimetal chains Local excitations in mixed-valence bimetal chains

2002-06-27

arxiv.org/abs/cond-mat/0206557v1

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages, 9 figures embedded, submitted to Phys. Rev. B

Scientific paper

We investigate localized intragap states in mixed-valence bimetal chains in an attempt to encourage further explorations into quasi-one-dimensional halogen-bridged binuclear metal (MMX) complexes. Within a coupled electron-phonon model, soliton and polaron excitations in the two distinct ground states of MMX chains are numerically calculated and compared. Making a continuum-model analysis as well, we reveal their scaling properties with particular emphasis on the analogy between MMX chains and trans-polyacetylene.

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