97 citations · 160 across the 25 of their papers we have counts for
27 papers
Vibrational Sample-Based Quantum Diagonalization with Unitary-Cluster-Jastrow Ansätze on IBM QPUs
Kunal Kumar, Erik Lötstedt, Yuri Kobayashi +1
We extend sample-based quantum diagonalization (SQD) to anharmonic vibrational spectra and use it to benchmark how vibrational ansätze scale on present-day hardware under a direct…
Observation of complex orbital order in MnV2O4
Chihaya Koyama, Shunsuke Kitou, Taishun Manjo +8
Orbital ordering in vanadium spinel oxides with a geometrically frustrated pyrochlore structure has been a subject of controversy, owing to competing theoretical models and the abs…
Observation of g-wave altermagnetic multipole
Ryo Misawa, Rikuto Oiwa, Shunsuke Kitou +16
Over the past few years, altermagnets have emerged as a new class of collinear magnets with broken time-reversal symmetry, offering novel opportunities for spintronics beyond conve…
Stripe antiferromagnetism in van der Waals metal HoTe3 decoupled from charge density wave order
Weiyi Yun, Ryota Nakano, Ryo Misawa +10
The () family of layered van der Waals (vdW) compounds hosts coexisting magnetic and charge density wave (CDW) orders, yet the interplay bet…
Automatic Termination Strategy of Inelastic Neutron-scattering Measurement Using Bayesian Optimization for Bin-width Selection
Kensuke Muto, Hirotaka Sakamoto, Kenji Nagata +2
Currently, an excessive amount of event data is being obtained in four-dimensional inelastic neutron-scattering experiments. A method for automatic bin-width optimization of multid…
Emergent Cooperative Superstructures via Order-Disorder Kinetics in Molecule-Intercalated NbSe2
Taiga Ueda, Hideki Matsuoka, Shungo Aoyagi +12
The design of quantum states at heterointerfaces has enabled a variety of emergent phenomena. Among them, molecular intercalation superlattices have attracted attention as tunable…
Molecular-Orbital Degeneracy Lifting and Suppression of a Flat-Band Metal in a Tetrahedral Cluster System NbSeI
Keita Kojima, Youichi Yamakawa, Ryutaro Okuma +7
The lifting of degenerate electronic states has been extensively studied in transition metal compounds, where diverse quantum phenomena arise from the degrees of freedom of d elect…
Linear tetramer formation in nonmagnetic pyrochlore niobate
Shota Nishida, Shunsuke Kitou, Shingo Toyoda +3
We investigate displacive short-range order in pyrochlore Y2Nb2O7, which exhibits a nonmagnetic insulating state despite the presence of formally tetravalent Nb4+ (S = 1/2) ions on…
Effect of uniaxial stress on helimagnetic phases in the square-lattice itinerant magnet EuAl
Masaki Gen, Takuya Nomoto, Hiraku Saito +5
We investigate uniaxial-stress effects on the magnetic phase diagram of the square-lattice itinerant magnet EuAl, where strong coupling among spin, lattice, and charge produc…
Higher-order epitaxy: A pathway to suppressing structural instability and emergent superconductivity
Yuki Sato, Soma Nagahama, Shunsuke Kitou +11
Molecular beam epitaxy enables the growth of thin film materials with novel properties and functionalities. Typically, the lattice constants of films and substrates are designed to…
Unraveling a chemical-bond-driven root of topology in three-dimensional chiral crystals
Shungo Aoyagi, Shunsuke Kitou, Yuiga Nakamura +6
Chirality manifests across multiple scales, yielding unique phenomena that break mirror symmetry. In chiral materials, unexpectedly large spin-filtering or photogalvanic effects ha…
Successive orthorhombic distortions in kagome metals by molecular orbital formation
Ryo Misawa, Shunsuke Kitou, Rinsuke Yamada +12
The kagome lattice, with its inherent frustration, hosts a plethora of exotic phenomena, including the emergence of charge density wave order. The high rotational sym…
Visualization of Co 3d high- and low-spin states via valence electron density
Kamini Gautam, Shunsuke Kitou, Yuiga Nakamura +5
Properties of trivalent cobalt oxides are governed by the spin and orbital states of Co3+ ions, which are strongly coupled to their local coordination environments and chemical bon…
Current-induced successive structural phase transitions beyond thermal equilibrium in single-crystal VO2
Shunsuke Kitou, Akitoshi Nakano, Masato Imaizumi +5
Nonequilibrium systems driven by external energy sources host unexplored physics; yet phase transitions beyond thermal equilibrium remain elusive. Here, we demonstrate that electri…
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…
Triangular lattice magnet GdGa with short-period spin cycloids and possible skyrmion phases
Priya R. Baral, Nguyen Duy Khanh, Masaki Gen +6
The two-dimensional triangular lattice (TAL) is a model system of magnetic frustration and competing interactions, where skyrmion spin vortices can be induced by a vertical magneti…
Ferroaxial order of the monolayer ice in martyite
Toshihiro Nomura, Shunsuke Kitou, Junichi Komatsu +13
Ice Ih, the most stable phase of water at ambient pressure, is a stacking of the honeycomb network of water molecules H2O. What if one layer of ice is exfoliated and confined to a…
Electronic Structure of Kramers Nodal-Line Semimetal YAuGe and Anomalous Hall Effect Induced by Magnetic Rare-Earth Substitution
Takashi Kurumaji, Jorge I. Facio, Natsuki Mitsuishi +11
Nodal-line semimetals are a class of topological materials hosting one dimensional lines of band degeneracy. Kramers nodal-line (KNL) metals/semimetals have recently been theoretic…
Reply to "Comment on "Reconsidering the nonlinear emergent inductance: time-varying Joule heating and its impact on the AC electrical response"" by Yokouch et al
Soju Furuta, Wataru Koshibae, Taka-hisa Arima +1
This is a response to the comments [arXiv:2407.15682 and Phys.Rev.B 111, 146401 (2025)] by Yokouchi et al. on our paper in Phys.Rev.B 110, 174402 (2024). In this Reply, we note tha…
Contrasting magnetothermal conductivity in sibling Co-based honeycomb-lattice antiferromagnets
Masato Ueno, Takashi Kurumaji, Shunsuke Kitou +4
Honeycomb-lattice antiferromagnets have attracted wide attention for exploration of exotic heat transport and their interplay with magnetic excitations. In this work, we have revea…
Reconsidering the nonlinear emergent inductance: time-varying Joule heating and its impact on the AC electrical response
Soju Furuta, Wataru Koshibae, Keisuke Matsuura +5
A nonlinearly enhanced electrical reactance, , under a large AC current has been measured to explore emergent inductors, which constitute a new class of inductors based on t…
Metamagnetism and anomalous magnetotransport properties in rare-earth-based polar semimetals AuGe ( Dy, Ho, and Gd)
Takashi Kurumaji, Masaki Gen, Shunsuke Kitou +1
We report the magnetic, magnetoelastic, and magnetotransport properties of single crystals of polar magnets AuGe ( Dy, Ho, and Gd), grown by Au-Ge self-flux. Magnetization a…
Spin-lattice-coupled helical magnetic order in breathing pyrochlore magnets, CuAlCrS and CuGaCrS
Masaki Gen, Taro Nakajima, Hiraku Saito +2
We report low-temperature powder X-ray and neutron diffraction studies on breathing pyrochlore magnets CuCrS ( = Al, Ga), which undergo a magnetic transition at $…
Unconventional anomalous Hall effect in epitaxially stabilized orthorhombic Ru perovskite thin films
L. -F. Zhang, T. C. Fujita, Y. Masutake +5
Complex oxides are mesmerizing material systems to realize multiple physical properties and functionalities by integrating different elements in a single compound. However, owing t…