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Showing 1–18 of 18 results
Advanced filters: Author: Shinichiro Seki Clear advanced filters

  • Skyrmions are a type of topological spin texture that great potential across a wide variety of technological applications. Here, Yu et al. study the thermally driven motion of Skyrmions and find a minimum temperature gradient for the motion of skyrmions two orders of magnitude smaller than for domain walls.

    • Xiuzhen Yu
    • Fumitaka Kagawa
    • Yoshinori Tokura
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-6

  • GdRu2Si2 can host magnetic skyrmions, however, it does not have inversion symmetry breaking, a feature usually assumed necessary for skyrmion formation. Using scanning tunnelling microscopy, the authors visualise the double-Q structure in the itinerant electrons that mediate the skyrmion formation.

    • Yuuki Yasui
    • Christopher J. Butler
    • Shinichiro Seki
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-6

  • The antiferromagnet CoNb3S6 with chiral crystal lattice has near-zero magnetization, but exhibits a large thermoelectric Nernst effect in zero magnetic field, attributed to topological nodal planes in its electronic structure and magnetic spin-space group symmetries in the ordered state.

    • Nguyen Duy Khanh
    • Susumu Minami
    • Max Hirschberger
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-10

  • Sustainable water management relies on water infrastructure that encompasses artificial structures and natural ecosystems, along with the cooperation of people and various organizations.

    • Taikan Oki
    • Junji Hashimoto
    • Shinichiro Nakamura
    Comments & Opinion
    Nature Water
    Volume: 2, P: 1048-1050

  • The controlled creation of magnetic skyrmions is a prerequisite for their application in future spintronic devices. While charge currents can induce skyrmions via spin torque, surface acoustic waves can do the same through magnetoelastic coupling of inhomogeneous strain paired with thermal fluctuations.

    • Tomoyuki Yokouchi
    • Satoshi Sugimoto
    • Yoshichika Otani
    Research
    Nature Nanotechnology
    Volume: 15, P: 361-366

  • Experimental realizations of magnetic skyrmions, particle-like spin swirls with topological protection, so far have required inversion symmetry breaking or a geometrically frustrated lattice. In centrosymmetric GdRu2Si2, in which a geometrically frustrated lattice is absent, a skyrmion lattice phase emerges, which is probably stabilized by four-spin interactions mediated by itinerant electrons in the presence of easy-axis anisotropy.

    • Nguyen Duy Khanh
    • Taro Nakajima
    • Shinichiro Seki
    Research
    Nature Nanotechnology
    Volume: 15, P: 444-449

  • A total of 1074 patients with a history of ischemic stroke enrolled in The Recurrent Stroke Prevention Clinical Outcome (RESPECT) Study were assigned to intensive blood pressure (BP) control group (blood pressure < 120/80 mmHg) or standard blood pressure control group (blood pressure < 140/90 mmHg) and were followed up for a mean of 3.9 years. Seventy-eight first recurrent strokes occurred, including 70 ischemic stroke and 8 intracerebral hemorrhage. Intensive treatment did not change annual risk of ischemic stroke (1.74% vs. 1.75%, P = 0.999), but markedly reduced risk of hemorrhagic stroke (0.00% vs. 0.39%, P = 0.005). Beneficial effect of intensive BP control were observed for risk of hemorrhagic stroke in the patients with a history of ischemic stroke.

    • Kazuo Kitagawa
    • Hisatomi Arima
    • Seigo Nakada
    Research
    Hypertension Research
    Volume: 45, P: 591-601

  • Current physical neuromorphic computing faces critical challenges of how to reconfigure key physical dynamics of a system to adapt computational performance to match a diverse range of tasks. Here the authors present a task-adaptive approach to physical neuromorphic computing based on on-demand control of computing performance using various magnetic phases of chiral magnets.

    • Oscar Lee
    • Tianyi Wei
    • Hidekazu Kurebayashi
    ResearchOpen Access
    Nature Materials
    Volume: 23, P: 79-87

  • In response to injury, satellite cells (SCs) asymmetrically divide to self-renew and repair muscle. Here the authors show that a cytokine G-CSF is crucial for long-term expansion of activated SCs and muscle regeneration in mice, suggesting that G-CSF treatment may have beneficial effect in Duchenne muscular dystrophy.

    • Nozomi Hayashiji
    • Shinsuke Yuasa
    • Keiichi Fukuda
    Research
    Nature Communications
    Volume: 6, P: 1-16

  • Typically, skyrmions appear in magnet systems which are non-centrosymmetric. Here, using neutron and X-ray scattering, Takagi et al show the emergence of a skyrmion phase in the centrosymmetric material EuAl4. This expands the range of materials potential hosting skyrmions.

    • Rina Takagi
    • Naofumi Matsuyama
    • Shinichiro Seki
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-7

  • Skyrmions and antiskyrmions are nanometric spin whirls with opposite topological charges. In the Heusler magnet Mn1.4Pt0.9Pd0.1Sn, modulations of the orientation and strength of an in-plane magnetic field induces the transformation from antiskyrmions to non-topological bubbles and skyrmions.

    • Licong Peng
    • Rina Takagi
    • Yoshinori Tokura
    Research
    Nature Nanotechnology
    Volume: 15, P: 181-186

  • Skyrmions are topologically non-trivial, vortex-like magnetic structures the dynamics of which have been mostly studied in 2D systems, but they are also able to exist as 3D tube-like structures. Here, the authors report a combination of experimental and computational results investigating the annihilation dynamics of 3D skyrmion structures in order to better understand how to stabilise topological structures in other bulk magnetic systems.

    • Max T. Birch
    • David Cortés-Ortuño
    • Peter D. Hatton
    ResearchOpen Access
    Communications Physics
    Volume: 4, P: 1-9