Peierls bond distortion in substituted polyacetylenes

Authors
Wu, CQ Zhang, YZ Lin, HQ
Citation
Cq. Wu et al., Peierls bond distortion in substituted polyacetylenes, SYNTH METAL, 119(1-3), 2001, pp. 219-220
Citations number
4
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SYNTHETIC METALS
ISSN journal
03796779 → ACNP
Volume
119
Issue
1-3
Year of publication
2001
Pages
219 - 220
Database
ISI
SICI code
0379-6779(20010315)119:1-3<219:PBDISP>2.0.ZU;2-W
Abstract
Peierls lattice distortion has been investigated in substituted polyacetyle nes. We find that the Peierls dimerization could be suppressed by the subst itution of hydrogen atoms with phenyl or methyl. A study on an oligomer by a Lanczos exact diagonalization algorithm indicates that the inclusion of H ubbard repulsion does not change the result. The expected quadrimerization, which is required by the Peierls theorem, does not appear in poly(methyl-a cetylene).