Incommensurate ground states of a commensurate Peierls-Hubbard Hamiltonian
- 15 December 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 44 (24) , 13228-13236
- https://doi.org/10.1103/physrevb.44.13228
Abstract
The possibility of long-period (‘‘superlattice’’) ground states is systematically investigated in a commensurate (3/4-filled), one-dimensional two-band Peierls-Hubbard Hamiltonian. This model has been proposed to describe halogen-bridged mixed-valence linear-chain compounds and is a one-dimensional analog of a Hamiltonian proposed to model cuprate and bismuthate oxide superconductors. Conventional superlattice phases are driven by competing length scales (for example, from incommensurate filling or an external incommensurate potential). However, these long-period ground states are intrinsic to a competition between long-range repulsive Coulomb forces and the attractive on-site electron-phonon interaction, even at exactly 3/4 filling where a period of four lattice constants might be naively expected by Peierls’s argument.Keywords
This publication has 24 references indexed in Scilit:
- The mid-infrared signature of photo-induced defects in the quasi-one-dimensional mixed-valence solid [PtII(en)2][PtIV(en)2Cl2][ClO4]4Solid State Communications, 1989
- Ground and defect states in a two band model of halogen-bridged transition metal linear chain complexesSynthetic Metals, 1989
- Synthesis and crystal structure of a novel one-dimensional halogen-bridged nickel(III)-X-nickel(III) compound, {[Ni(R,R-chxn)2Br]Br2}.infin.Journal of the American Chemical Society, 1989
- Halogen-Bridged Metal Complexes: Model Compounds for High-TcSuperconductors?Physica Scripta, 1987
- Kink lattice structure and midgap band in incommensurate Charge Density WavesPhysica B+C, 1986
- Soliton lattice structure and mid-gap band in nearly commensurate charge-density-wave states. II. Self-similar band-structure and coupling-constant dependencePhysical Review B, 1986
- The metal-insulator transitions in the Peierls chainJournal of Physics C: Solid State Physics, 1983
- The Electronic Spectra of Aromatic Molecules II: A Theoretical Treatment of Excited States of Alternant Hydrocarbon Molecules based on Self-Consistent Molecular OrbitalsProceedings of the Physical Society. Section A, 1955
- A Semi-Empirical Theory of the Electronic Spectra and Electronic Structure of Complex Unsaturated Molecules. IIThe Journal of Chemical Physics, 1953
- A Method for Estimating Electronic Repulsion Integrals Over LCAO MO'S in Complex Unsaturated MoleculesThe Journal of Chemical Physics, 1952