Journal ArticleDOI
Extended Peierls-Hubbard Model for One-Dimensional N-Sites N-Electrons System. III. Lattice Relaxation after Optical Excitation in CDW
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In this paper, the self-trapping of exciton in the CDW phase of one-dimensional many-electron system with short-ranged electron-phonon(e-p) and electron-e-e interactions is studied by a variational method for exciton and in the adiabatic limit for phonons, so as to clarify its lattice relaxation after the light excitation.Abstract:
The self-trapping of exciton in the CDW phase of one-dimensional many-electron system with short-ranged electron-phonon(e-p) and electron-electron(e-e) interactions is studied by a variational method for exciton and in the adiabatic limit for phonons, so as to clarify its lattice relaxation after the light excitation. The adiabatic potential surface describing the relaxation process is calculated in a wide region of four parameters characterizing the system: the transfer energy of electron T , the e-p coupling energy S , intra- and inter-site e-e repulsive energies U and V . It is shown that in the strong coupling case S ≫2 T , the exciton relaxes to metastable ground states such as an island of SDW phase, and only in the inter-mediate case S ∼2 T it relaxes to a luminescent state localized in the middle of the energy-gap. These results can well explain the luminescence of Wolffram's red salt.read more
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Solitons, Polarons, and Excitons in Quasi-One-Dimensional Halogen-Bridged Transition Metal Compounds
TL;DR: The photogeneration of solitons and polarons in the quasi-one-dimensional (1-D) halogen (X)-bridged metal (M) compounds was reported in this article.
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Optical and magnetic properties of the halogen-bridged metal complexes modified by hydrogen bondings: {M(1R,2R-cyclohexanediamine)2Br}Br2 (M=Pt, Pd, and Ni).
TL;DR: On en conclut que le complexe pour M=Ni est dans un etat monovalent dans lequel un isolant de Mott est forme dans une chaine reguliere (−Ni 3+ −Br − -), alors qu'un etat de degre d'oxydation mixte est formes avec Pt et Pd.
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Photo-Induced Defect States in a Quasi One-Dimensional Mixed-Valence Platinum Complex
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Studies of mixed-valence states in three-dimensional halogen-bridged gold compounds, Cs2AuIAuIIIX6, (X = Cl, Br or I). Part 2. X-Ray photoelectron spectroscopic study
TL;DR: In this paper, the mixed-valence states in Cs2AuIAuIIIX6 (X = Cl, Br or I) were systematically studied by X-ray photoelectron spectroscopy of the Au 4f region for the first time.
Journal ArticleDOI
Extended Peierls-Hubbard Model for One-Dimensional N-Sites N-Electrons System. II. Effect of Fluctuation, Optical and Magnetic Excitations
TL;DR: In this article, a one-dimensional many-electron system with site-diagonal electron-phonon coupling, intra-and inter-site electronelectron (e-e) repulsions was studied within the RPA for electrons and in the adiabatic limit for phonons, so as to clarify effects of fluctuation on the phase diagram of the ground state within the mean field theory.
References
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Journal ArticleDOI
Relaxation of Electron-Phonon System in Optically Excited Quasi-1-D Mixed Valence Crystal Wolffram's Red Salt
Hiroshi Tanino,Koichi Kobayashi +1 more
TL;DR: In this article, a continuous, flat and Raman-like emission is observed in the emission spectra of Wolffram's red salt in terms of the recombination during and after relaxation of a charge transfer excited state to the self-trapped state, and the relaxation process is discussed on the basis of experimental results on the spectral shapes, the intensities and the degree of polarization of the spectra.
Journal ArticleDOI
Extended Peierls-Hubbard Model for One-Dimensional N-Sites N-Electrons System. I. Phase Diagram by Mean Field Theory
TL;DR: In this paper, the phase diagram of a one-dimensional many-electron system with site-diagonal electron-phonon(e-p) coupling and short-ranged inter-site electron-e-e repulsion as well as intra-site one is studied within the mean field theory for electrons and in the adiabatic limit for phonons.
Journal ArticleDOI
Self-Trapping in Mixed Crystal –Clustering, Dimensionality, Percolation–
Yuzo Shinozuka,Yutaka Toyozawa +1 more
TL;DR: In this paper, self-trapping of a Frenkel exciton in binary mixed crystal A c B 1-c, with excitation energy difference Δ = e B - e A and exciton-phonon coupling constant g, is studied.
Journal ArticleDOI
Extended Peierls-Hubbard Model for One-Dimensional N-Sites N-Electrons System. II. Effect of Fluctuation, Optical and Magnetic Excitations
TL;DR: In this article, a one-dimensional many-electron system with site-diagonal electron-phonon coupling, intra-and inter-site electronelectron (e-e) repulsions was studied within the RPA for electrons and in the adiabatic limit for phonons, so as to clarify effects of fluctuation on the phase diagram of the ground state within the mean field theory.
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