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Mott Transition
Artificial superlattices composed of perovskite oxides realizes the low‐dimensional Mott system, which hosts magnetic anisotropy that can be completely rotated by the magnetic field. This unprecedented magnetic anisotropy tuning is observed via angular magnetoresistance measurements by engineering the interlayer coupling strength. More details can be found in article number 2303176...
The magnetic anisotropy of low‐dimensional Mott systems exhibits unexpected magnetotransport behavior useful for spin‐based quantum electronics. Yet, the anisotropy of natural materials is inherently determined by the crystal structure, highly limiting its engineering. The magnetic anisotropy modulation near a digitized dimensional Mott boundary in artificial superlattices composed of a correlated...
Passivation is a popular method to increase power conversion efficiency (PCE), reduce hysteresis related to surface traps and defects, and adjust mismatched energy levels. In this paper, an approach is reported using ammonium chloride (AC) to enhance passivation effects by controlling chlorine (Cl) and ammonium ions (NH4+) on the front and back side of tin oxides (SnO2). AC pre‐treatment is applied...
Neuromorphic systems, which emulate neural functionalities of a human brain, are considered to be an attractive next‐generation computing approach, with advantages of high energy efficiency and fast computing speed. After these neuromorphic systems are proposed, it is demonstrated that artificial synapses and neurons can mimic neural functions of biological synapses and neurons. However, since the...
In article number 2100640, Stephen J. Pearton, Gwan‐Hyoung Lee, Jihyun Kim, and co‐workers review the recent progress on 2D‐material‐based neuromorphic devices. Artificial neuromorphic devices, including synapse and neuron devices, have been classified according to their working principles. The unique properties of 2D materials make it possible to emulate biological neural components, enabling to...
Solution‐processed Cu(In,Ga)(S,Se)2 (CIGS) has a great potential for the production of large‐area photovoltaic devices at low cost. However, CIGS solar cells processed from solution exhibit relatively lower performance compared to vacuum‐processed devices because of a lack of proper composition distribution, which is mainly instigated by the limited Se uptake during chalcogenization. In this work,...
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