New Routes to Solitons in Quasi One-Dimensional Conductors

Details New Routes to Solitons in Quasi One-Dimensional Conductors New Routes to Solitons in Quasi One-Dimensional Conductors

2008-01-21

arxiv.org/abs/0801.3202v2

Physics

Condensed Matter

Strongly Correlated Electrons

Proceedings of ISCOM 2007, to be published in Solid State Sciences (2008)

Scientific paper

10.1016/j.solidstatesciences.200

We collect evidences on existence of microscopic solitons, and their determining role in electronic processes of quasi-1D conductors. The ferroelectric charge ordering gives access to several types of solitons in conductivity and permittivity, and to solitons' bound pairs in optics - both in insulating and conducting cases of TMTTF and TMTSF subfamilies. The excursion to physics of conjugated polymers allows to suggest further experiments. Internal tunnelling in Charge Density Waves goes through the channel of "amplitude solitons", which correspond to the long sought quasi-particle - the spinon. The same experiment gives an access to the reversible reconstruction of the junction via spontaneous creation of a lattice of 2Pi solitons - a grid of dislocations. The individual 2Pi solitons have been visually captured in recent STM experiments. Junctions of organic and oxide conductors are anticipated to show similar effects of reconstruction.

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