59 citations · 142 across the 11 of their papers we have counts for
11 papers
Emerging electro-optic molecular crystals for optoelectronic integration
Keishi Sunami, Sachio Horiuchi, Yoriko Sonoda +5
The rapid advancement of communication technology necessitates the development of hybrid optical modulators that integrate silicon photonics with electro-optic (EO) materials to en…
Quantum liquid states of spin solitons in a ferroelectric spin-Peierls state
Shusaku Imajo, Atsushi Miyake, Ryosuke Kurihara +4
In this study, we performed high-magnetic-field magnetization, dielectric, and ultrasound measurements on an organic salt showing a ferroelectric spin-Peierls (FSP) state, which is…
Quantum transport of topological spin solitonsin a one-dimensional organic ferroelectric
Shusaku Imajo, Atsushi Miyake, Ryosuke Kurihara +4
We report the dielectric, magnetic, and ultrasonic properties of a one-dimensional organic salt TTF-QBrI. These indicate that TTF-QBrI shows a ferroelectric spin-Peierls (F…
Enhanced lattice fluctuations prior to a nonmagnetic ferroelectric order in an ionic spin-chain system
Keishi Sunami, Tomohiro Baba, Kazuya Miyagawa +2
We investigated microscopic lattice states in the donor-acceptor ionic Mott insulator, TTF-BA, by Br-NQR spectroscopy to explore cross-correlated fluctuations between spin,…
Magnetic excitations in an ionic spin-chain system with a non-magnetic ferroelectric instability
K. Sunami, Y. Sakai, R. Takehara +4
Cross-correlation between magnetism and dielectric is expected to offer novel emergent phenomena. Here, magnetic excitations in the organic donor-acceptor spin-chain system, TTF-BA…
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…
Narrowband terahertz radiation by an impulsive stimulated Raman scattering in an above-room-temperature organic ferroelectric benzimidazole
M. Sotome, N. Kida, S. Horiuchi +1
We observe a terahertz radiation from a hydrogen-bonded organic molecular ferroelectric 5,6-dichloro-2-methylbenzimidazole excited by a femtosecond laser pulse at room temperature.…
Terahertz radiation imaging of ferroelectric domain topology in room-temperature organic supramolecular ferroelectrics
M. Sotome, N. Kida, S. Horiuchi +1
We demonstrate a new method to detect ferroelectric domains in inside and surface regions of organic ferroelectrics by mapping out two orthogonally polarized terahertz waves radiat…
Terahertz radiation by optical rectification in a hydrogen-bonded organic molecular ferroelectric crystal, 2-phenylmalondialdehyde
W. Guan, N. Kida, M. Sotome +5
Terahertz radiation by optical rectification has been observed at room temperature in a hydrogen-bonded organic molecular ferroelectric crystal, 2-phenyl malondialdehyde (PhMDA). T…
Polarization Switching Ability Dependent on Multidomain Topology in a Uniaxial Organic Ferroelectric
F. Kagawa, S. Horiuchi, N. Minami +5
The switching of electric polarization induced by electric fields -a fundamental functionality of ferroelectrics- is closely associated with the motions of the domain walls that se…
Polar distortions in hydrogen bonded organic ferroelectrics
Alessandro Stroppa, Domenico Di Sante, Sachio Horiuchi +3
Although ferroelectric compounds containing hydrogen bonds were among the first to be discovered, organic ferroelectrics are relatively rare. The discovery of high polarization at…