Effects of electron-electron correlations and quantum phonons in a 3/4-filled, 2-band peierls-hubbard hamiltonian for MX chains
| Autor: | J.T. Gammel, E.Y. Loh, A. R. Bishop, S. M. Weber-Milbrodt, S. Marianer, J. Reichl |
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| Rok vydání: | 1991 |
| Předmět: |
Physics
Condensed matter physics Phonon Mechanical Engineering Metals and Alloys Electron Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Electronic Optical and Magnetic Materials symbols.namesake Mechanics of Materials Quantum mechanics Materials Chemistry symbols Condensed Matter::Strongly Correlated Electrons Adiabatic process Hamiltonian (quantum mechanics) Ground state Quantum |
| Zdroj: | Synthetic Metals. 42:2755-2759 |
| ISSN: | 0379-6779 |
| Popis: | We have studied the effects of electron-electron (e-e) correlations on the ground state and excitations of MX chains within a 3/4-filled two-band discrete Peierls-Hubbard model with on-site and inter-site electron-phonon (e-p) couplings. We have used theory, Hartree-Fock and exact diagonalization for classical adiabatic phonons, and a viriational approach allowing for finite phonon frequency (quantum phonons). We compare model predictions with experiments on MX chains. |
| Databáze: | OpenAIRE |
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