98 citations · 465 across the 13 of their papers we have counts for
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Mean-Field Analysis of Electric Field Effect on Charge Orders in Organic Conductors
Emi Yukawa, Masao Ogata
In order to investigate charge ordering phenomena under electric field, static nonequilibrium Hartree approximation (SNHA) method is formulated on the basis of the nonequilibrium G…
Increase of Superconducting Correlation due to Dimensionality Change in Quasi-One-Dimensional Conductors
Yuki Fuseya, Masao Ogata
Response functions for spin-density-wave (SDW) and d-wave singlet superconductivity (SC) in quasi-one-dimensional (Q1D) electron systems are calculated by a renormalization grou…
Fermi Surface Reconstruction without Breakdown of Kondo Screening at Quantum Critical Point
Hiroshi Watanabe, Masao Ogata
Motivated by recent Hall-effect experiment in YbRhSi, we study ground state properties of a Kondo lattice model in a two-dimensional square lattice using variational Monte…
Possibility of Gapless Spin Liquid State by One-dimensionalization
Yuta Hayashi, Masao Ogata
Motivated by the observation of a gapless spin liquid state in -(BEDT-TTF)Cu(CN), we analyze the anisotropic triangular lattice Heisenberg model with the res…
Charge order and superconductivity in a two-dimensional triangular lattice at n=2/3
Hiroshi Watanabe, Masao Ogata
To investigate the possibility of charge order and superconductivity in a doped two-dimensional triangular lattice, we study the extended Hubbard model with variational Monte Carlo…
Ferromagnetic fluctuation and superconductivity in Na_0.35CoO_2*1.3H_2O: FLEX study of multi-orbital Hubbard model
Masahito Mochizuki, Youichi Yanase, Masao Ogata
Spin and charge fluctuations and superconductivity in Na_0.35CoO_2*1.3H_2O are studied based on a multi-orbital Hubbard model. By applying the fluctuation exchange (FLEX) approxima…