We report a new physical mechanism, cycling excitation process (CEP), that produces intrinsic gain for photocurrent. The CEP process has shown much greater efficiency and lower noise than the impact ionization process...
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ISBN:
(纸本)9781538662359
We report a new physical mechanism, cycling excitation process (CEP), that produces intrinsic gain for photocurrent. The CEP process has shown much greater efficiency and lower noise than the impact ionization process, the mechanism for avalanche photodetectors. Using the CEP process, we have obtained detectors of low excess noise and a record high gain-bandwidth product of over 2 THz. Above all, such performance was obtained from a thin (30nm) layer of amorphous silicon as the gain medium.
We thoroughly investigate the electromagnetic response of intelligent functional metasurfaces. We study two distinct designs operating at different frequency regimes, namely, a switch-fabric-based design for GHz frequ...
Localized surface plasmons (LSPs) in metal nanostructures have attracted much attention for their role in generating non-equilibrium hot carriers (HCs) for photochemistry1-3, photodetection4,5 and photoluminescence6. ...
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Soft Matter In their Communication on page 16346, M. Thuo et al. describe the development of a heat‐free biomimetic metal patterning method. Rose‐like structures were replicated using undercooled liquid metal core–...
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Soft Matter In their Communication on page 16346, M. Thuo et al. describe the development of a heat‐free biomimetic metal patterning method. Rose‐like structures were replicated using undercooled liquid metal core–shell particles.
We use temperature-dependent Hall measurements to identify contributions of spin Hall, magnetic proximity, and sublattice effects to the anomalous Hall signal in heavy metal/ferrimagnetic insulator heterostructures wi...
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We use temperature-dependent Hall measurements to identify contributions of spin Hall, magnetic proximity, and sublattice effects to the anomalous Hall signal in heavy metal/ferrimagnetic insulator heterostructures with perpendicular magnetic anisotropy. This approach enables detection of both the magnetic proximity effect onset temperature and the magnetization compensation temperature and provides essential information regarding the interfacial exchange coupling. Onset of a magnetic proximity effect yields a local extremum in the temperature-dependent anomalous Hall signal, which occurs at higher temperature as magnetic insulator thickness increases. This magnetic proximity effect onset occurs at much higher temperature in Pt than W. The magnetization compensation point is identified by a sharp anomalous Hall sign change and divergent coercive field. We directly probe the magnetic proximity effect using x-ray magnetic circular dichroism and polarized neutron reflectometry, which reveal an antiferromagnetic coupling between W and the magnetic insulator. Finally, we summarize the exchange-coupling configurations and the anomalous Hall-effect sign of the magnetized heavy metal in various heavy metal/magnetic insulator heterostructures.
Weiche Materialien In der Zuschrift auf S. 16488 beschreiben M. Thuo et al. die Entwicklung einer biomimetischen Methode zur Musterbildung von Metallen. Rosenförmige Strukturen wurden unter Verwendung von unterk&...
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Weiche Materialien In der Zuschrift auf S. 16488 beschreiben M. Thuo et al. die Entwicklung einer biomimetischen Methode zur Musterbildung von Metallen. Rosenförmige Strukturen wurden unter Verwendung von unterkühlten flüssigmetallischen Kern‐Schale‐Partikeln repliziert.
Machine-learning tasks performed by neural networks demonstrated useful capabilities for producing reliable, and repeatable intelligent decisions. Integrated photonics, leveraging both component miniaturization and th...
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