106 citations · 184 across the 16 of their papers we have counts for
17 papers
Chiral Antiferromagnetism from Momentum-Space Resonance in a 2D Semiconductor
R. Okuma, T. Ikenobe, Y. Fujisawa +28
Understanding the principles governing the emergence of chiral quantum phases is a fundamental challenge, not only for uncovering new mechanisms of quantum-state formation but also…
Stabilizing Itinerant Electrons in a Corner-Sharing Kagomé Oxide Nd4Os3ZnO14
Ryutaro Okuma, Yuita Fujisawa, Chia-Hsiu Hsu +8
Kagome oxides provide a fertile platform for exploring exotic electronic states arising from geometrical frustration and characteristic band topology. Here, we report the synthesis…
Realization of a parity-violating antiferromagnetic state in LaMnSi
Takuma Iwata, K. Shiraishi, T. Aoyama +12
Spontaneous symmetry breaking underlies functional electronic phenomena in quantum materials. Breaking space-inversion () or time-reversal () symmetry can…
Intrinsic low-spin state and strain-tunable anomalous Hall scaling in high-quality SrRuO3 (111) films
Harunori Shiratani, Yuki K. Wakabayashi, Yoshiharu Krockenberger +6
The (111)-oriented 4d ferromagnetic perovskite SrRuO3 (SRO) offers a unique triangular-lattice geometry, making it a promising platform for exploring Berry-curvature-driven and spi…
Epitaxial lift-off of LaSrMnO membranes enabled by BaO sacrificial layers and restoration of the Curie temperature
Takahito Takeda, Daigo Matsubara, Yuki K. Wakabayashi +7
Ultrathin complex-oxide membranes provide a powerful platform for strain engineering, interfacial control, and heterogeneous integration; however, their formation remains constrain…
Spin Hall effect in van der Waals ferromagnet FeGeTe
Tomoharu Ohta, Yuto Samukawa, Nan Jiang +5
We investigate the spin Hall effect (SHE) in a van der Waals (vdW) ferromagnet FeGeTe (FGT) with a Curie temperature of 310 K utilizing the spin-torque ferr…
Single monolayer ferromagnetic perovskite SrRuO3 with high conductivity and strong ferromagnetism
Yuki K. Wakabayashi, Masaki Kobayashi, Yoshiharu Krockenberger +4
Achieving robust ferromagnetism and high conductivity in atomically thin oxide materials is critical for advancing spintronic technologies. Here, we report the growth of a highly c…
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…
Observation of surface Fermi arcs in altermagnetic Weyl semimetal CrSb
Wenlong Lu, Shiyu Feng, Yuzhi Wang +10
As a special type of collinear antiferromagnetism (AFM), altermagnetism has garnered significant research interest recently. Altermagnets exhibit broken parity-time symmetry and ze…
Observation of floating surface state in obstructed atomic insulator candidate NiP
Xiang-Rui Liu, Ming-Yuan Zhu, Yuanwen Feng +15
Obstructed atomic insulator is recently proposed as an unconventional material, in which electric charge centers localized at sites away from the atoms. A half-filling surface stat…
Emergent topological magnetism in Hund's excitonic insulator
R. Okuma, K. Yamagami, Y. Fujisawa +14
Analogous to the charged electron-electron pair condensation in superconductors, an excitonic insulator (EI) represents Fermi surface instability due to spontaneous formation and c…
Observation of Spin Splitting in Room-Temperature Metallic Antiferromagnet CrSb
Meng Zeng, Ming-Yuan Zhu, Yu-Peng Zhu +18
Recently, unconventional antiferromagnets that enable the splitting of electronic spins have been theoretically proposed and experimentally realized, where the magnetic sublattices…
Zone-selection effect of photoelectron intensity distributions in a nonsymmorphic system RAlSi (R : Ce and Nd)
Yusei Morita, K. Nakanishi, T. Iwata +9
We investigate the electronic structures of noncentrosymmetric Weyl semimetals RAlSi (R: Ce and Nd) using soft x-ray angle-resolved photoemission spectroscopy. We find that the pho…
SrRuO3 under tensile strain: Thickness-dependent electronic and magnetic properties
Yuki K. Wakabayashi, Masaki Kobayashi, Yuichi Seki +6
The burgeoning fields of spintronics and topological electronics require materials possessing a unique combination of properties: ferromagnetism, metallicity, and chemical stabilit…
Observation of Giant Spin Splitting and d-wave Spin Texture in Room Temperature Altermagnet RuO2
Zihan Lin, Dong Chen, Wenlong Lu +9
Recently, a novel magnetic phase called altermagnetism has been proposed, ushering in a third distinct magnetic phase beyond ferromagnetism and antiferromagnetism. It is expected t…
Mechanism of ferromagnetism enhancement in a La Sr MnO membrane released from epitaxial strain
Takahito Takeda, Takuma Arai, Kohei Yamagami +4
Recent studies have shown that the magnetic properties of the ferromagnetic perovskite oxide La Sr MnO (LSMO) grown on an SrTiO3 (STO) substrate, such as its ma…
Magnetic anisotropy driven by ligand in 4d transition metal oxide SrRuO3
Yuki K. Wakabayashi, Masaki Kobayashi, Yuichi Seki +7
The origin of magnetic anisotropy in magnetic compounds is a longstanding issue in solid state physics and nonmagnetic ligand ions are considered to contribute little to magnetic a…