Results 11 to 20 of about 84,860 (301)
Stability of Polar Vortex Lattice in Ferroelectric Superlattices [PDF]
Nano Letters, 2017 A novel mesoscale state comprising of an ordered polar vortex lattice has been demonstrated in ferroelectric superlattices of PbTiO3/SrTiO3. Here, we employ phase-field simulations, analytical theory, and experimental observations to evaluate thermodynamic conditions and geometric length scales that are critical for the formation of such exotic vortex ...
Zijian Hong +11 more
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Stratospheric wave driving events as an alternative to sudden stratospheric warmings [PDF]
Weather and Climate Dynamics, 2022 Natural variations in the strength of the northern stratospheric polar vortex, so-called polar vortex events, help to improve subseasonal-to-seasonal (S2S) predictions of winter climate.
T. Reichler, M. Jucker, M. Jucker
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Remote Sensing, 2023 Fifty years of daily ERA5 reanalysis data are employed to investigate the linkages between the strength of the stratospheric polar vortex and the tropospheric polar vortex during the boreal winter.
Lixin Han, Chunhua Shi, Dong Guo
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Evaluating Long-Term Variability of the Arctic Stratospheric Polar Vortex Simulated by CMIP6 Models
Remote Sensing, 2022 The Arctic stratospheric polar vortex is a key component of the climate system, which has significant impacts on surface temperatures in the mid-latitudes and polar regions.
Siyi Zhao +6 more
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On the pattern of interannual polar vortex–ozone co-variability during northern hemispheric winter [PDF]
Atmospheric Chemistry and Physics, 2023 Stratospheric ozone is important for both stratospheric and surface climate. In the lower stratosphere during winter, its variability is governed primarily by transport dynamics induced by wave–mean flow interactions. In this work, we analyze interannual
F. Harzer +8 more
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Vortex Polarity Switching by a Spin-Polarized Current [PDF]
Physical Review Letters, 2007 The spin-transfer effect is investigated for the vortex state of a magnetic nanodot. A spin current is shown to act similarly to an effective magnetic field perpendicular to the nanodot. Then a vortex with magnetization (polarity) parallel to the current polarization is energetically favorable.
Caputo, J.G. +3 more
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Atmosphere, 2022 The stratospheric polar vortex is a large-scale cyclonic circulation that forms in a cold air mass in the polar region and extends from the middle troposphere to the stratosphere. The polar vortex is implicated in a variety of atmospheric processes, such
Svetlana Veretenenko
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Air mass exchange across the polar vortex edge during a simulated major stratospheric warming [PDF]
Annales Geophysicae, 1995 The dynamics of the polar vortex in winter and spring play an important role in explaining observed low ozone values. A quantification of physical and chemical processes is necessary to obtain information about natural and anthropogenic causes of ...
G. Günther, M. Dameris
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Singularities of Partially Polarized Vortex Beams [PDF]
Frontiers in Physics, 2020 In this paper we look at three ways to define singularities in a partially coherent electromagnetic beam with non-uniform polarization. A simple model of such a beam is developed to highlight features of such singularities.
William Scott Raburn, Greg Gbur
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Polarization conversion when focusing cylindrically polarized vortex beams [PDF]
Scientific Reports, 2016 AbstractCurrently, cylindrical beams with radial or azimuthal polarization are being used successfully for the optical manipulation of micro- and nano-particles as well as in microscopy, lithography, nonlinear optics, materials processing, and telecommunication applications.
Alexey P. Porfirev +2 more
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