Possible Metastable State Triggered by Competition of Peierls State and Charge Ordered State

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dc.creatorOmori, Y.
dc.creatorTsuchiizu, M.
dc.creatorSuzumura, Y.
dc.date2008-01-12
dc.date.accessioned2026-07-07T08:54:12Z
dc.date.available2026-07-07T08:54:12Z
dc.descriptionWe examine a Peierls ground state and its competing metastable state in the one-dimensional quarter-filled Peierls-Hubbard model with the nearest-neighbor repulsive interaction V and the electron-phonon interaction (\propto 1/K with K being the elastic constant). From the mean-field approach, we obtain the phase diagram for the ground state on the plane of parameters V and K. The coexistent state of the spin-density wave and the charge ordering is realized for large V and K. With decreasing K, it exhibits a first-order phase transition to the unconventional Peierls state which is described by the bond-centered charge-density-wave state. In the large region of the Peierls ground state in the phase diagram, there exists the metastable state where the energy takes a local minimum with respect to the lattice distortion. On the basis of the present calculation, we discuss the photoinduced phase observed in the (EDO-TTF)_{2}PF_{6} compound.
dc.description8 pages, 9 figures
dc.identifierhttps://arxiv.org/abs/0801.1889
dc.identifierhttp://arxiv.org/abs/0801.1889
dc.identifierJ. Phys. Soc. Jpn. 76 (2007) 114709
dc.identifierdoi:10.1143/JPSJ.76.114709
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/145844
dc.subjectStrongly Correlated Electrons
dc.titlePossible Metastable State Triggered by Competition of Peierls State and Charge Ordered State
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