16 citations · 47 across the 8 of their papers we have counts for
7 papers
High-harmonic generation during ultrafast melting of a Mott insulating state
Ryohei Ikeda, Yuta Murakami, Daiki Sakai +3
Solids in an intense laser field show high-harmonic generation (HHG), which can provide information on carrier dynamics and band structures in weakly correlated systems. In strongl…
Piezoelectric Transition in a Nonpyroelectric Gyroidal Metal-Organic Framework
Shunsuke Kitou, Hajime Ishikawa, Yusuke Tokunaga +8
Among the thirty-two crystallographic point groups, 432 is the only one that lacks an inversion center but does not exhibit piezoelectricity. A gyroidal structure belongs to point…
Melting of excitonic insulator phase by an intense terahertz pulse in TaNiSe
Naoki Takamura, Tatsuya Miyamoto, Ryohei Ikeda +9
In this study, the optical response to a terahertz pulse was investigated in the transition metal chalcogenide TaNiSe, a candidate excitonic insulator. First, by irradiatin…
Fate of a soliton matter upon symmetry-breaking ferroelectric order
K. Sunami, R. Takehara, A. Katougi +6
In a one-dimensional (1D) system with degenerate ground states, their domain boundaries, dubbed solitons, emerge as topological excitations often carrying unconventional charges an…
Long-term stabilization of carrier envelope phases of mid-infrared pulses for the precise detection of phase-sensitive responses to electromagnetic waves
T. Yamakawa, N. Sono, T. Kitao +4
We report a newly designed mid-infrared-pump visible-probe measurement system, which can measure phase-sensitive responses to a mid-infrared pulse along the oscillating electromagn…
Photoexcitation of a polarization-inverted domain from the charge-ordered ferroelectric ground state of (TMTTF)PF
T. Yamaguchi, K. Asada, H. Yamakawa +5
We theoretically revealed that a weak photoexcitation achieves the electric polarization-inversion with approximately of all the charges, which was interpreted as a superimp…
Elliptically polarized terahertz radiation from a chiral oxide
R. Takeda, N. Kida, M. Sotome +1
Polarization control of terahertz wave is a challenging subject in terahertz science and technology. Here, we report a simple method to control polarization state of the terahertz…