Search Results - "TANAKA, Masaaki"
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Recent progress in ferromagnetic semiconductors and spintronics devices
Published in Japanese Journal of Applied Physics (01-01-2021)“…By actively using not only charge transport of electrons and holes but also their spins, we can create a variety of new phenomena and functional materials. It…”
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Neural mechanisms of mental fatigue
Published in Reviews in the neurosciences (01-08-2014)“…Fatigue is defined as a decline in the ability and efficiency of mental and/or physical activities that is caused by excessive mental and/or physical…”
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Quantum transport evidence of Weyl fermions in an epitaxial ferromagnetic oxide
Published in Nature communications (09-10-2020)“…Magnetic Weyl semimetals have novel transport phenomena related to pairs of Weyl nodes in the band structure. Although the existence of Weyl fermions is…”
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Efficient full spin–orbit torque switching in a single layer of a perpendicularly magnetized single-crystalline ferromagnet
Published in Nature communications (13-06-2019)“…Spin–orbit torque (SOT), which is induced by an in-plane electric current via large spin-orbit coupling, enables an innovative method of manipulating the…”
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Nearly non-magnetic valence band of the ferromagnetic semiconductor GaMnAs
Published in Nature physics (01-04-2011)“…The origin of ferromagnetism in the prototype ferromagnetic semiconductor GaMnAs is controversial because of an insufficient understanding of its band…”
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Giant gate-controlled proximity magnetoresistance in semiconductor-based ferromagnetic–non-magnetic bilayers
Published in Nature physics (01-11-2019)“…The evolution of information technology has been driven by the discovery of new forms of large magnetoresistance, such as giant magnetoresistance 1 , 2 and…”
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Micromagnetic investigations of Néel- and Bloch-type skyrmion dynamics induced by spin Hall effect of cap layers
Published in Japanese Journal of Applied Physics (01-09-2017)“…We investigate the spin-injection driving of skyrmion domains on a wire using micromagnetic simulations. We find that both Néel- and Bloch-type skyrmion…”
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A spin metal–oxide–semiconductor field-effect transistor using half-metallic-ferromagnet contacts for the source and drain
Published in Applied physics letters (29-03-2004)“…We propose and theoretically analyze a metal–oxide–semiconductor field-effect-transistor (MOSFET) type of spin transistor (spin MOSFET) consisting of a MOS…”
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Correlation between interlayer exchange coupling and domain wall velocity in multilayered magnetic wires
Published in Journal of magnetism and magnetic materials (01-01-2023)“…•The DW velocity increased with the increase of the antiferromagnetic IEC strength.•The antiferromagnetic IEC stabilizes the Neel-type DWs in the…”
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Large superconducting diode effect in ion-beam patterned Sn-based superconductor nanowire/topological Dirac semimetal planar heterostructures
Published in Nature communications (30-09-2024)“…High-quality superconductor/topological material heterostructures are highly desired for realisation of topological superconductivity and Majorana physics…”
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High‐Mobility 2D Hole Gas at a SrTiO3 Interface
Published in Advanced materials (Weinheim) (01-04-2020)“…Strontium titanate (SrTiO3 or STO) is important for oxide‐based electronics as it serves as a standard substrate for a wide range of high‐temperature…”
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Thickness-dependent quantum transport of Weyl fermions in ultra-high-quality SrRuO3 films
Published in Applied physics letters (01-03-2021)“…The recent observation of Weyl fermions in the itinerant 4d ferromagnetic perovskite SrRuO3 points to this material being a good platform for exploring novel…”
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High-temperature ferromagnetism in heavily Fe-doped ferromagnetic semiconductor (Ga,Fe)Sb
Published in Applied physics letters (09-05-2016)“…We show high-temperature ferromagnetism in heavily Fe-doped ferromagnetic semiconductor (Ga1− x ,Fe x )Sb (x = 23% and 25%) thin films grown by low-temperature…”
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Giant gate-controlled odd-parity magnetoresistance in one-dimensional channels with a magnetic proximity effect
Published in Nature communications (09-11-2022)“…According to Onsager’s principle, electrical resistance R of general conductors behaves as an even function of external magnetic field B . Only in special…”
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Neural effect of mental fatigue on physical fatigue: A magnetoencephalography study
Published in Brain research (13-01-2014)“…Abstract We sought to clarify the neural effect of mental fatigue on physical fatigue using magnetoencephalography (MEG) and classical conditioning techniques…”
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Observation of spontaneous spin-splitting in the band structure of an n-type zinc-blende ferromagnetic semiconductor
Published in Nature communications (19-12-2016)“…Large spin-splitting in the conduction band and valence band of ferromagnetic semiconductors, predicted by the influential mean-field Zener model and assumed…”
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Electric Field Control of Spin–Orbit Torque Magnetization Switching in a Spin–Orbit Ferromagnet Single Layer
Published in Advanced science (01-08-2023)“…To achieve a desirable magnitude of spin–orbit torque (SOT) for magnetization switching and realize multifunctional spin logic and memory devices utilizing…”
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Investigation of the therapeutic mechanism of subthreshold micropulse laser irradiation in retina
Published in Graefe's archive for clinical and experimental ophthalmology (01-05-2020)“…Purpose Subthreshold micropulse laser irradiation has been used for the treatment of retinal edema; however, there are few reports about the mechanism of its…”
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Artificial control of the bias-voltage dependence of tunnelling-anisotropic magnetoresistance using quantization in a single-crystal ferromagnet
Published in Nature communications (22-05-2017)“…A major issue in the development of spintronic memory devices is the reduction of the power consumption for the magnetization reversal. For this purpose, the…”
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Evidence for Spin-Triplet Electron Pairing in the Proximity-Induced Superconducting State of an Fe-Doped InAs Semiconductor
Published in Physical review letters (15-03-2019)“…We provide evidence for spin-triplet electron pairing in proximity-induced superconductivity in a ferromagnetic semiconductor (In,Fe)As. As discovered in…”
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