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Inherent Spin–Polarization Coupling in a Magnetoelectric Vortex
Nano Letters, 2022Solid-state materials are currently being explored as a platform for the manipulation of spins for spintronics and quantum information science. More broadly, a wide spectrum of ferroelectric materials, spanning from inorganic oxides to polymeric systems such as PVDF, present a different approach to explore quantum phenomena in which the spins are set ...
Sujit Das +11 more
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Dynamics of a polarized vortex ring
Journal of Fluid Mechanics, 1994This paper builds on our claim that most vortical structures in transitional and turbulent flows are partially polarized. Polarization is inferred by the application of helical wave decomposition. We analyse initially polarized isolated viscous vortex rings through direct numerical simulation of the Navier-Stokes equations using divergence-free ...
D. Virk, M. V. Melander, F. Hussain
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Properties of circularly polarized vortex beams
Optics Letters, 2006The properties of circularly polarized vortex beams in cylindrical polarization bases are studied. A circularly polarized vortex beam is decomposed into radial and azimuthal polarization. With the proper combination of vortex charge and the handedness of the circular polarization, a focal field with an extremely strong longitudinal component as well as
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On the origin of polar vortex air
Journal of Geophysical Research: Atmospheres, 2001Forward and backward three‐dimensional stratospheric polar vortex trajectory computations between fall and spring for each of the years 1992–1993 through 1999–2000 in the Northern Hemisphere and the years 1992–1999 in the Southern Hemisphere have been carried out.
Joan E. Rosenfield, Mark R. Schoeberl
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Vortex Tangle Polarized by Rotation
Journal of Low Temperature Physics, 2004Almost all studies of vortex states in superfluid 4He have been concerned with either ordered vortex arrays driven by rotation or disordered vortex tangles driven, for example, by thermal counterfiow. In this work we study numerically what happens to vortices in the presence of both effects.
Tsubota M, Barenghi CF, Araki T
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Vortex polarization states in nanoferroelectrics
2010 Conference on Optoelectronic and Microelectronic Materials and Devices, 2010Two-dimensional arrays of ferroelectric lead zirconate titanate (PZT) nanodots fabricated using pulsed laser deposition (PLD) through ultrathin anodic aluminum oxide (AAO) membrane stencil masks have been investigated using piezoresponse force microscopy (PFM).
B.J. Rodriguez +7 more
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2020
<p><span>The Martian winter polar vortex </span><span>has recently been shown to be</span><span> annular in nature, with a local minimum in potential vorticity near the pole. This suggests barotropic instability, yet the vortex is remarkably persistent.
Emily Ball +4 more
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<p><span>The Martian winter polar vortex </span><span>has recently been shown to be</span><span> annular in nature, with a local minimum in potential vorticity near the pole. This suggests barotropic instability, yet the vortex is remarkably persistent.
Emily Ball +4 more
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Controllable vortex polarity switching by spin polarized current
Journal of Applied Physics, 2009Nanopillars containing a perpendicular polarizer and a vortex free layer have been considered as promising structures for the selective switching of the vortex core by changing the spin polarized current direction. In this paper, two distinct switching routes of the vortex cores are found to be classified according to the lateral dimension of samples ...
Wei Jin +3 more
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Tight focusing of elliptically polarized vortex beams
Applied Optics, 2009We study the focusing properties of elliptically polarized vortex beams. Based on vectorial Debye theory, some numerical calculations are given to illustrate the intensity and phase distribution properties of tightly focused vortex beams. It is found that the spin angular momentum of the elliptically polarized vortex beam will convert to orbital ...
Baosuan, Chen, Jixiong, Pu
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The stratospheric polar vortex in winter
Journal of Geophysical Research, 1959In winter the polar stratospheric air within the earth's shadow forms the core of an intense ‘cold low’ which extends from about 10 km to at least 50 km and possibly to the base of the ionosphere. Compared with the tropospheric general circulation, this vortex seems to be remarkably stable, particularly in the Southern Hemisphere.
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