3 papers
cond-mat.str-el2001
Optical conductivity in the CuO double chains of PrBa_2Cu_4O_8: Consequences of charge fluctuation
R. Amasaki, Y. Shibata, Y. Ohta
We calculate the optical conductivity of the CuO double chains of PrBaCuO by the mean-field approximation for the coupled two-chain Hubbard model around quarter filling…
cond-mat.str-el2001
Charge and Orbital Ordering in the Triangular-Lattice t_{2g}-Orbital System in One Dimension: A Possible Ground State of Bi_xV_8O_{16}
Y. Shibata, Y. Ohta
We consider the possible charge and orbital ordering in a Hollandite compound Bi_xV_8O_{16}, which is a new one-dimensional triangular-lattice t_{2g}-orbital system. Using the stro…
cond-mat.str-el2001
Charge Ordering in the One-Dimensional Extended Hubbard Model: Implication to the TMTTF Family of Organic Conductors
Y. Shibata, S. Nishimoto, Y. Ohta
We study the charge ordering (CO) in the one-dimensional (1D) extended Hubbard model at quarter filling where the nearest-neighbor Coulomb repulsion and dimerization in the hopping…