2000/10/18 by R. Torsten Clay, R. T. Clay, S. Mazumdar +2 · 13 citations
Engineering · Materials Science · Physics and Astronomy · #Charge (physics) #Charge density wave #Condensed matter physics #Cooper pair #Coulomb #Distortion (music) #Electron #Electronic and Structural Properties of Oxides #Molecular Junctions and Nanostructures #Organic and Molecular Conductors Research #Physics #Quantum mechanics #Quarter (Canadian coin) #Soliton #Superconductivity #Work (physics) #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.86.4084
published in Physical Review Letters 86(18), 4084-4087 (American Physical Society) · 4 eps figures
arxiv created 2000/10/18 · openalex publication_date 2001/04/30 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Previous work has demonstrated the existence of soliton defect states with charges +/-e/2 in the limits of zero and infinite on-site Coulomb interactions in the one-dimensional (1D) quarter-filled band. For large but finite on-site Coulomb interaction, the low temperature 2kF bond distortion that occurs within the 4kF bond-distorted phase is accompanied by charge ordering on the sites. We show that a "re-integerization" of the defect charge occurs in this bond-charge-density-wave state due to a "binding" of the fractional charges. We indicate briefly possible implications of this result for mechanisms of organic superconductivity.