S. Asai

activity

20112024

most citedField-induced quantum spin disordered state in spin-1/2 honeycomb magnet Na2Co2TeO6

163 citations · 741 across the 22 of their papers we have counts for

collaborators

22 papers

cond-mat.str-el2024★ 2 cited

Dirac Magnon in Honeycomb Lattice Magnet NiTiO3

Hodaka Kikuchi, Makoto Ozeki, Nobuyuki Kurita +4

We performed inelastic neutron scattering experiments on single-crystal samples of the honeycomb lattice magnet, ilmenite NiTiO3. Below the Neel temperature of 22 K, spin wave exci…

cond-mat.str-el2024★ 1 cited

Unusual spin dynamics in the van der Waals antiferromagnet FeGa2S4

Yifei Tang, Yoshihiko Umemoto, Yo Kawamoto +5

Spin dynamics in the van der Waals antiferromagnet FeGa $_{2}$ S $_{4}$ with triangular lattices are investigated using magnetometry, neutron scattering, and muon spin relaxation measurem…

cond-mat.str-el2024★ 148 cited

Chiral-Split Magnon in Altermagnetic MnTe

Zheyuan Liu, Makoto Ozeki, Shinichiro Asai +2

Altermagnetism is a newly discovered magnetic class named after the alternating spin polarizations in both real and reciprocal spaces. Like the spin-splitting of electronic bands,…

cond-mat.str-el2024★ 1 cited

Spin dynamics in linear magnetoelectric material Mn $_{3}$ Ta $_{2}$ O $_{8}$

Hodaka Kikuchi, SHunsuke Hasegawa, Shinichiro Asai +5

We performed inelastic neutron scattering experiments on single crystal samples of a linear magnetoelectric material Mn $_{3}$ Ta $_{2}$ O $_{8}$ , which exhibits a collinear antiferroma…

physics.ins-det2023★ 10 cited

A new inelastic neutron spectrometer HODACA

Hodaka Kikuchi, Shinichiro Asai, Taku J. Sato +4

A new multiplex-type inelastic neutron scattering spectrometer, HOrizontally Defocusing Analyzer Concurrent data Acquisition spectrometer (HODACA), was recently developed and built…

cond-mat.other2022★ 3 cited

Inelastic Neutron Scattering in Weakly Coupled Triangular Spin Tubes CsCrF $_{4}$

Hodaka Kikuchi, Shinichiro Asai, Hirotaka Manaka +3

We performed inelastic neutron scattering (INS) experiments to measure spin dynamics on a polycrystalline sample of a spin tube candidate CsCrF $_{4}$ . The compound exhibits a succe…

cond-mat.str-el2022★ 4 cited

Spin Excitation in Coupled Honeycomb Lattice Ni $_{2}$ InSbO $_{6}$

Zheyuan Liu, Taka-hisa Arima, Shinichi Itoh +2

We performed an inelastic neutron scattering experiment on a polycrystalline sample of a helimagnet Ni $_{2}$ InSbO $_{6}$ to construct the spin Hamiltonian. Well-defined spin-wave excita…

cond-mat.str-el2021★ 12 cited

Dimensional reduction by geometrical frustration in a cubic antiferromagnet composed of tetrahedral clusters

Ryutaro Okuma, Maiko Kofu, Shinichiro Asai +10

Dimensionality is a critical factor in determining the properties of solids and is an apparent built-in character of the crystal structure. However, it can be an emergent and tunab…

cond-mat.str-el2021

Nontrivial temperature dependence of magnetic anisotropy in multiferroics Ba $_{2}$ MnGe $_{2}$ O $_{7}$

Shunsuke Hasegawa, Shohei Hayashida, Shinichiro Asai +3

We measured the temperature dependences of the static magnetization and the spin excitation in a square-lattice multiferroics Ba $_{2}$ MnGe $_{2}$ O $_{7}$ . An anisotropy gap of the observed…

cond-mat.str-el2021★ 3 cited

Spin-gap formation due to spin-Peierls instability in $π$ -orbital-ordered NaO $_{2}$

Mizuki Miyajima, Fahmi Astuti, Takahito Fukuda +11

We have investigated the low-temperature magnetism of sodium superoxide (NaO $_{2}$ ), in which spin, orbital, and lattice degrees of freedom are closely entangled. The magnetic susc…

cond-mat.str-el2020★ 120 cited

Antiferromagnetic Kitaev interaction in $J_\rm{eff}=1/2$ cobalt honeycomb materials Na $_{3}$ Co $_{2}$ SbO $_{6}$ and Na $_{2}$ Co $_{2}$ TeO $_{6}$

Chaebin Kim, Jaehong Jeong, Gaoting Lin +8

Finding new materials with antiferromagnetic (AFM) Kitaev interaction is an urgent issue to broaden and enrich the quantum magnetism research significantly. By carrying out inelast…

cond-mat.str-el2020★ 163 cited

Field-induced quantum spin disordered state in spin-1/2 honeycomb magnet Na2Co2TeO6

Gaoting Lin, Jaehong Jeong, Chaebin Kim +25

Spin-orbit coupled honeycomb magnets with the Kitaev interaction have received a lot of attention due to their potential of hosting exotic quantum states including quantum spin liq…

cond-mat.mtrl-sci2020★ 58 cited

Spin-waves in 2D honeycomb lattice $X X Z$ -type van der Waals antiferromagnet CoPS $_{3}$

Chaebin Kim, Jaehong Jeong, Takatsugu Masuda +5

The magnetic excitations in CoPS $_{3}$ , a two-dimensional van der Waals (vdW) antiferromagnet with spin $S = 3/2$ on a honeycomb lattice, has been measured using powder inelastic neutr…

cond-mat.mtrl-sci2020★ 137 cited

Establishing the carrier scattering phase diagram for ZrNiSn-based half-Heusler thermoelectric materials

Qingyong Ren, Chenguang Fu, Qinyi Qiu +15

Chemical doping is one of the most important strategies for tuning electrical properties of semiconductors, particularly thermoelectric materials. Generally, the main role of chemi…

cond-mat.supr-con2020

Spintronic superconductor in a bulk layered material with natural spin-valve structure

Shunsuke Sakuragi, S. Sasaki, R. Akashi +29

Multi-layered materials provide fascinating platforms to realize various functional properties, possibly leading to future electronic devices controlled by external fields. In part…

cond-mat.str-el2018★ 19 cited

Low temperature magnetic properties of Nd2Ru2O7

S. T. Ku, Dinesh Kumar, M. R. Lees +9

We present magnetic susceptibility, heat capacity, and neutron diffraction measurements of polycrystalline Nd2Ru2O7 down to 0.4 K. Three anomalies in the magnetic susceptibility me…

cond-mat.str-el2017★ 15 cited

Spin Dynamics in a Stripe-ordered Buckled Honeycomb Lattice Antiferromagnet Ba $_{2}$ NiTeO $_{6}$

Shinichiro Asai, Minoru Soda, Kazuhiro Kasatani +4

We carried out inelastic neutron scattering experiments on a buckled honeycomb lattice antiferromagnet Ba $_{2}$ NiTeO $_{6}$ exhibiting a stripe structure at a low temperature. Magne…

cond-mat.str-el2016

Novel Charge Ordering in the Trimer Iridium Oxide BaIrO3

Ichiro Terasaki, Shun Ito, Taichi Igarashi +8

We have prepared polycrystalline samples of the trimer Ir oxide BaIrO3 with face-shared Ir3O12 trimers, and have investigated the origin of the phase transition at 182 K by measuri…

cond-mat.str-el2014★ 7 cited

Unconventional magnetism in the layered oxide LaSrRhO $_{4}$

Noriyasu Furuta, Shinichiro Asai, Taichi Igarashi +10

We have prepared polycrystalline samples of LaSrRh $_{1 - x}$ Ga $_{x}$ O $_{4}$ and LaSr $_{1 - x}$ Ca $_{x}$ RhO $_{4}$ ,and have measured the x-ray diffraction, resistivity, Seebeck coefficient, magne…

cond-mat.str-el2013★ 8 cited

Spin state of Co $^{3 +}$ in LaCo $_{1 - x}$ Rh $_{x}$ O $_{3}$ investigated by structural phenomena

Shinichiro Asai, Ryuji Okazaki, Ichiro Terasaki +13

Neutron diffraction for a polycrystalline sample of LaCo $_{0.8}$ Rh $_{0.2}$ O $_{3}$ and synchrotron x-ray diffraction for polycrystalline samples of LaCo $_{0.9}$ Rh $_{0.1}$ O $_{3}$ and…

cond-mat.str-el2012★ 12 cited

Ga $^{3 +}$ -substitution effects in the weak ferromagnetic oxide LaCo $_{0.8}$ Rh $_{0.2}$ O $_{3}$

Shinichiro Asai, Noriyasu Furuta, Ryuji Okazaki +2

Magnetization and x-ray diffraction have been measured on polycrystalline samples of LaCo $_{0.8 - y}$ Rh $_{0.2}$ Ga $_{y}$ O $_{3}$ for $0 \leq y \leq 0.15$ in order to understand the spi…

cond-mat.str-el2011★ 18 cited

Weak Ferromagnetism in LaCo1-xRhxO3: Anomalous Magnetism Emerging between Two Nonmagnetic End Phases

Shinichiro Asai, Noriyasu Furuta, Yukio Yasui +1

Magnetization has been measured for polycrystalline samples of LaCo1-xRhxO3 (0 {\leq} x {\leq} 0.9) in order to investigate magnetism induced in the solid solution of two nonmagnet…

Dirac Magnon in Honeycomb Lattice Magnet NiTiO3

Unusual spin dynamics in the van der Waals antiferromagnet FeGa2S4

Chiral-Split Magnon in Altermagnetic MnTe

Spin dynamics in linear magnetoelectric material Mn3​Ta2​O8​

A new inelastic neutron spectrometer HODACA

Inelastic Neutron Scattering in Weakly Coupled Triangular Spin Tubes CsCrF4​

Spin Excitation in Coupled Honeycomb Lattice Ni2​InSbO6​

Dimensional reduction by geometrical frustration in a cubic antiferromagnet composed of tetrahedral clusters

Nontrivial temperature dependence of magnetic anisotropy in multiferroics Ba2​MnGe2​O7​

Spin-gap formation due to spin-Peierls instability in π-orbital-ordered NaO2​

Antiferromagnetic Kitaev interaction in $J_\rm{eff}=1/2$ cobalt honeycomb materials Na3​Co2​SbO6​ and Na2​Co2​TeO6​