18 citations · 75 across the 12 of their papers we have counts for
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Low-energy photoexcitations inside the Mott gap in doped Hubbard and t-J ladders
Sumal Chandra, Kazuya Shinjo, Shigetoshi Sota +2
We investigate changes in the optical conductivity of doped Mott insulators by tuning ultrashort pump pulses to target either the Drude or low-energy absorption regions. Using a ho…
Optical absorption activated by an ultrashort half-cycle pulse in metallic and superconducting states of the Hubbard model
Kazuya Shinjo, Shigetoshi Sota, Seiji Yunoki +1
The development of high-intensity ultrashort laser pulses unlocks the potential of pump-probe spectroscopy in sub-femtosecond timescale. Notably, subcycle pump pulses can generate…
Spin and charge dynamics of doped one-dimensional Mott insulators
Takami Tohyama, Hiroki Maeda, Kenji Tsutsui +2
Recent angle-resolved photoemission spectroscopy (ARPES) for a newly discovered doped one-dimensional (1D) Mott insulator BaSrCuO proposed the presence of attra…
Spin loop-current textures in Hubbard models
Kazuya Shinjo, Shigetoshi Sota, Seiji Yunoki +1
The recent experimental observations of loop current in SrIrO, YBaCuO, and SrCuO have inspired a theoretical study that broadly r…
Anomalous suppression of photo-induced in-gap weight in the optical conductivity of a two-leg Hubbard ladder
Takami Tohyama, Kazuya Shinjo, Shigetoshi Sota +1
Photoinduced nonequilibrium states in the Mott insulators reflect the fundamental nature of competition between itinerancy and localization of the charge degrees of freedom. The sp…
Controlling inversion and time-reversal symmetries by subcycle pulses in the one-dimensional extended Hubbard model
Kazuya Shinjo, Shigetoshi Sota, Seiji Yunoki +1
Owning to their high controllability, laser pulses have contributed greatly to our understanding of strongly correlated electron systems. However, typical multicycle pulses do not…