152 citations · 787 across the 30 of their papers we have counts for
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Multi-Triplon Excitations of Hubbard Ladders with Site-Dependent Potentials
Nobuya Maeshima, Ken-ichi Hino
We study low-lying spin-singlet excitations of two-leg Hubbard ladders with site-dependent potentials. Using general formulas of the charge disproportionation induced by the site-d…
Dynamical Charge Structure Factor of a One-Dimensional Ionic Hubbard Model in the Low-Energy Region
Yuhei Komaki, Yuma Iwase, Shogo Yanagimatsu +3
We present a numerical study of the charge dynamical structure factor N(k,omega) of a one-dimensional (1D) ionic Hubbard model in the Mott insulator phase. We show that the low-ene…
Photoexcitation-Energy-Dependent Transition Pathways from a Dimer Mott Insulator to a Metal
Kenji Yonemitsu, Satoshi Miyashita, Nobuya Maeshima
We theoretically study pump-photon-energy-dependent pathways of a photoinduced dimer-Mott-insulator-to-metal transition, on the basis of numerical solutions to the time-dependent S…
Photoinduced coherent oscillations in the one-dimensional two-orbital Hubbard model
Nobuya Maeshima, Ken-ichi Hino, Kenji Yonemitsu
We study photoinduced ultrafast coherent oscillations originating from orbital degrees of freedom in the one-dimensional two-orbital Hubbard model. By solving the time-dependent Sc…
Coupling-dependent rates of energy transfers from photoexcited Mott insulators to lattice vibrations
Kenji Yonemitsu, Nobuya Maeshima
Photoexcited states are relaxed by transferring energy to the environments. In order to study which coupling allows fast energy transfer to lattice vibrations in correlated electro…
Polaronic states with Spin-Charge-Coupled Excitation in a 1D Mott Insulator K-TCNQ
Nobuya Maeshima, Kenji Yonemitsu
We discuss photogenerated midgap states of a one-dimensional (1D) dimerized Mott insulator, potassium-tetracyanoquinodimethane (K-TCNQ). Two types of phonon modes are taken into ac…