Category: 4. Physics

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  • Real-time observation of topological defect dynamics mediating two-dimensional skyrmion lattice melting

    Real-time observation of topological defect dynamics mediating two-dimensional skyrmion lattice melting

    Magnetic multilayer stack

    The Ta(5 nm)/Co20Fe60B20(0.9 nm)/Ta(0.07 nm)/MgO(2 nm)/Ta(5 nm) multilayer stack (layer thickness with an accuracy better than 0.01 nm) is deposited by d.c./radio-frequency magnetron sputtering using a…

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  • Neuromorphic Hebbian learning with magnetic tunnel junction synapses

    Neuromorphic Hebbian learning with magnetic tunnel junction synapses

    Subtraction logic for negative weights

    Let the parallel (P) and anti-parallel (AP) MTJ conductances be denoted by GP and GAP, respectively, within an MTJ crossbar array G. Let vin be a binarized input voltage vector with values 0 and a fixed…

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  • Dual-mode narrowband organic photodetectors for self-aligned imaging in NIR-I and NIR-II

    Dual-mode narrowband organic photodetectors for self-aligned imaging in NIR-I and NIR-II

    The schematic cross-sectional view of the double BHJ OPD, comprising a layer configuration of glass/ITO/ZnO (10 nm)/PM6:IT-4F (1:1) (3.5 µm)/MoO3 (5 nm)/PTB7-Th:COTIC-4Cl:Y6 (1:1.05:0.45) (670 nm)/ZnO (10 nm)/Ag, is shown in Fig. 1a….

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