New Routes to Solitons in Quasi One-Dimensional Conductors

Abstract

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.

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

References in corpus (3)

• Charge ordering in the TMTTF family of molecular conductors
• The ferroelectric Mott-Hubbard phase of organic (TMTTF)2X conductors
• On-chain electrodynamics of metallic (TMTSF)_2 X salts: Observation of Tomonaga-Luttinger liquid response

Cited by in corpus (7)

• Correlated Quantum Transport of Density Wave Electrons
• Coherent quantum transport of charge density waves
• Charged solitons in branched conducting polymers
• Exciton dynamics in branched conducting polymers: Quantum graphs based approach
• Solitons: from Charge Density Waves to FFLO in superconductors
• Phase transitions in ensembles of solitons induced by an optical pumping or a strong electric field
• Phase transitions and pattern formation in ensembles of phase-amplitude solitons in quasi-one-dimensional electronic systems