Search Results - "Mogi, Masataka"
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Current-induced switching of proximity-induced ferromagnetic surface states in a topological insulator
Published in Nature communications (03-03-2021)“…Electrical manipulation of magnetization could be an essential function for energy-efficient spintronics technology. A magnetic topological insulator,…”
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2
Large non-reciprocal charge transport mediated by quantum anomalous Hall edge states
Published in Nature nanotechnology (01-10-2020)“…The topological nature of the quantum anomalous Hall effect (QAHE) causes a dissipationless chiral edge current at the sample boundary 1 , 2 . Of fundamental…”
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3
Terahertz spectroscopy on Faraday and Kerr rotations in a quantum anomalous Hall state
Published in Nature communications (20-07-2016)“…Electrodynamic responses from three-dimensional topological insulators are characterized by the universal magnetoelectric term constituent of the Lagrangian…”
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4
Current-induced magnetization switching at charge-transferred interface between topological insulator (Bi,Sb)2Te3 and van der Waals ferromagnet Fe3GeTe2
Published in Applied physics letters (19-07-2021)“…Ferromagnetic two-dimensional van der Waals materials attract enormous interest as a platform to explore spin-related quantum phenomena, especially in…”
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5
Visualization of an axion insulating state at the transition between 2 chiral quantum anomalous Hall states
Published in Proceedings of the National Academy of Sciences - PNAS (16-07-2019)“…Quantum-relativistic materials often host electronic phenomena with exotic spatial distributions. In particular, quantum anomalous Hall (QAH) insulators…”
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6
Quantum anomalous Hall effect with a permanent magnet defines a quantum resistance standard
Published in Nature physics (01-01-2022)“…The quantum anomalous Hall effect (QAHE) 1 – 6 is a transport phenomenon where the Hall resistance is quantized to the von Klitzing constant due to the…”
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7
Tailoring tricolor structure of magnetic topological insulator for robust axion insulator
Published in Science advances (06-10-2017)“…Exploration of novel electromagnetic phenomena is a subject of great interest in topological quantum materials. One of the unprecedented effects to be…”
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8
Precise resistance measurement of quantum anomalous Hall effect in magnetic heterostructure film of topological insulator
Published in Applied physics letters (06-04-2020)“…The accuracy of Hall resistance in the quantum anomalous Hall effect has been studied at zero magnetic field using Crx(Bi,Sb) 2 − x Te3-based magnetic…”
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9
Laughlin charge pumping in a quantum anomalous Hall insulator
Published in Nature physics (19-01-2023)“…Adiabatic charge pumping is one of the most salient features of topological phases of matter 1 – 3 . Laughlin’s charge pumping in a quantum Hall system is the…”
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10
Emergence of spin-orbit coupled ferromagnetic surface state derived from Zak phase in a nonmagnetic insulator FeSi
Published in Science advances (19-11-2021)“…FeSi is a nonmagnetic narrow-gap insulator, exhibiting peculiar charge and spin dynamics beyond a simple band structure picture. Those unusual features have…”
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11
Optical anomalous Hall effect enhanced by flat bands in ferromagnetic van der Waals semimetal
Published in npj quantum materials (23-07-2022)“…Geometrical aspects of electronic states in condensed matter have led to the experimental realization of enhanced electromagnetic phenomena, as exemplified by…”
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12
Observation of superparamagnetism in coexistence with quantum anomalous Hall C = ±1 and C = 0 Chern states
Published in npj quantum materials (08-12-2017)“…Simultaneous transport and scanning nanoSQUID-on-tip magnetic imaging studies in Cr-(Bi,Sb) 2 Te 3 modulation-doped films reveal the presence of…”
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13
Large Anomalous Hall Effect in Topological Insulators with Proximitized Ferromagnetic Insulators
Published in Physical review letters (03-07-2019)“…We report a proximity-driven large anomalous Hall effect in all-telluride heterostructures consisting of the ferromagnetic insulator Cr_{2}Ge_{2}Te_{6} and…”
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14
Light-induced insulator–metal transition in Sr2IrO4 reveals the nature of the insulating ground state
Published in Proceedings of the National Academy of Sciences - PNAS (16-07-2024)“…Sr2IrO4 has attracted considerable attention due to its structural and electronic similarities to La2CuO4, the parent compound of high-Tc superconducting…”
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15
Light-induced insulator-metal transition in Sr 2 IrO 4 reveals the nature of the insulating ground state
Published in Proceedings of the National Academy of Sciences - PNAS (16-07-2024)“…Sr IrO has attracted considerable attention due to its structural and electronic similarities to La CuO , the parent compound of high- superconducting…”
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16
Coexistence of Interacting Charge Density Waves in a Layered Semiconductor
Published in Physical review letters (15-05-2024)“…Coexisting orders are key features of strongly correlated materials and underlie many intriguing phenomena from unconventional superconductivity to topological…”
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17
Coexistence of Interacting Charge Density Waves in a Layered Semiconductor
Published in Physical review letters (17-05-2024)“…Coexisting orders are key features of strongly correlated materials and underlie many intriguing phenomena from unconventional superconductivity to topological…”
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18
Direct observation of a photoinduced topological phase transition in Bi-doped (Pb,Sn)Se
Published 29-10-2024“…Ultrafast photoexcitation offers a novel approach to manipulating quantum materials. One of the long-standing goals in this field is to achieve optical control…”
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19
Direct observation of Floquet-Bloch states in monolayer graphene
Published 22-04-2024“…Floquet engineering is a novel method of manipulating quantum phases of matter via periodic driving [1, 2]. It has successfully been utilized in different…”
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20
Theory of the microwave impedance microscopy of Chern insulators
Published 18-04-2023“…Phys. Rev. B 108, 235432 (2023) Microwave impedance microscopy (MIM) has been utilized to directly visualize topological edge states in many quantum materials,…”
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