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arXiv · 0907.2840

Coexisting orders in the quarter-filled Hubbard chain with elastic deformations

H. D. Rosales·D. C. Cabra
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Abstract

The electronic properties of the quarter-filled extended Peierls-Holstein-Hubbard model that includes lattice distortions and molecular deformations are investigated theoretically using the bosonization approach. We predict the existence of a wide variety of charge-elastic phases depending of the values of the Peierls and Holstein couplings. We include the effect of the Peierls deformation in the nearest-neighbor repulsion V, that may be present in real materials where Coulomb interactions depend strongly on the distance, and we show that the phase diagram changes substantially for large V when this term is taken into account.

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H. D. Rosales, D. C. Cabra. 2009-07-16. Coexisting orders in the quarter-filled Hubbard chain with elastic deformations. https://doi.org/10.1140/epjb/e2010-00184-4

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