47 citations · 438 across the 46 of their papers we have counts for
14 papers · 1 filter
Excitonic Correlations, Spin-State Ordering, and Magnetic-Field Effects in One-Dimensional Two-Orbital Hubbard Model for Spin-Crossover Region
Koya Kitagawa, Hiroaki Matsueda
The electronic properties of excitonic insulators have been examined precisely in recent years. Pictures of exciton condensation may be applied to the spin-state transition observe…
Comment on "Low-Temperature Magnetic Properties of the Kondo Lattice Model in One Dimension"
Hiroaki Matsueda
This is a comment for a paper entitled "Low-Temperature Magnetic Properties of the Kondo Lattice Model in One Dimension" [S.Minami and H.Kawamura, JPSJ84,044702(2015)].
Photo-Induced Phase Transition in Charge Order Systems --Charge Frustration and Interplay with Lattice--
Hiroshi Hashimoto, Hiroaki Matsueda, Hitoshi Seo +1
Lattice effects on photo-excited states in interacting charge frustrated system are examined. Real time dynamics in the interacting spinless fermion model on a triangular lattice c…
Exact-Diagonalization Analysis of Composite Excitations in the t-J Model
Takashi Otaki, Yuta Yahagi, Hiroaki Matsueda
We examine spectral properties of doped holes dressed with surrounding spin cloud in the t-J model. These composite-hole excitations well characterize prominent band structures in…
Photo-Induced Dynamics in Charge-Frustrated Systems
Hiroshi Hashimoto, Hiroaki Matsueda, Hitoshi Seo +1
Photo-excited charge dynamics of interacting charge-frustrated systems are studied using a spinless fermion model on an anisotropic triangular lattice. Real-time evolution of the s…
Photoinduced spin-order destructions in one-dimensional extended Hubbard model
Hantao Lu, Shigetoshi Sota, Hiroaki Matsueda +2
By employing the time-dependent Lanczos method, the nonequilibrium process of the half-filled one-dimensional extended Hubbard model under the irradiation of a transient laser puls…
Enhanced charge order in a photoexcited one-dimensional strongly correlated system
Hantao Lu, Shigetoshi Sota, Hiroaki Matsueda +2
We present a compelling response of a low-dimensional strongly correlated system to an external perturbation. Using the time-dependent Lanczos method we investigate a nonequilibriu…
Relaxation Dynamics of Photocarriers in One-Dimensional Mott Insulators Coupled to Phonons
Hiroaki Matsueda, Shigetoshi Sota, Takami Tohyama +1
We examine recombination processes of photocarriers in one-dimensional Mott insulators coupled to phonons. Performing density matrix renormalization group calculations, we find tha…
Enhancement of phonon effects in photoexcited states of one-dimensional Mott insulators
Hiroaki Matsueda, Akihiro Ando, Takami Tohyama +1
We examine how the electron correlation affects the electron-phonon (EP) interaction in the linear optical absorption spectrum of the one-dimensional (1D) extended Hubbard-Holstein…
Photoinduced charge and spin dynamics in strongly correlated electron systems
Hiroaki Matsueda, Sumio Ishihara
Motivated by photoinduced phase transition in manganese oxides, charge and spin dynamics induced by photoirradiation are examined. We calculate the transient optical absorption spe…
Electron-phonon coupling and spin-charge separation in one-dimensional Mott insulators
Hiroaki Matsueda, Takami Tohyama, Sadamichi Maekawa
We examine the single-particle excitation spectrum in the one-dimensional Hubbard-Holstein model at half-filling by performing the dynamical density matrix renormalization group (D…
Temperature dependence of spinon and holon excitations in one-dimensional Mott insulators
Hiroaki Matsueda, Nejat Bulut, Takami Tohyama +1
Motivated by the recent angle-resolved photoemission spectroscopy (ARPES) measurements on one-dimensional Mott insulators, SrCuO and NaVO, we exa…
Excitonic effect on optical response in one-dimensional two-band Hubbard model
H. Matsueda, T. Tohyama, S. Maekawa
Motivated by the gigantic nonlinear optical response in the halogen-bridged Ni-compounds, the underlying electronic states of the compounds are examined in the one-dimensional two-…
Dynamical density matrix renormalization group study of photoexcited states in one-dimensional Mott insulators
H. Matsueda, T. Tohyama, S. Maekawa
One-dimensional Mott insulators exhibit giant nonlinear optical response. Based on the dynamical density matrix renormalization group method, photoexcited states and optical respon…