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Related papers: Streamer propagation in magnetic field

200 papers

We study the spin-resolved transport through magnetic nanostructures in monolayer and bilayer graphene. We take into account both the orbital effect of the inhomogeneous perpendicular magnetic field as well as the in-plane spin splitting…

Mesoscale and Nanoscale Physics · Physics 2009-11-04 L. Dell'Anna , A. De Martino

We address two finite size effects in perpendicular transport through magnetic multilayers. When the magnetic layer thickness in spin valves becomes of the order or smaller than the spin-flip diffusion length, structural asymmetries affect…

Mesoscale and Nanoscale Physics · Physics 2015-06-25 Alexey A. Kovalev , Gerrit E. W. Bauer , Arne Brataas

We investigate the reflection coefficient of spin waves propagating in an ultra-thin ferromagnetic film with regions where saturation magnetization is modulated. We find analytically and using micromagnetic simulations that there are…

Mesoscale and Nanoscale Physics · Physics 2020-01-08 Pablo Borys , Naser Qureshi , Cesar Ordonez-Romero , Oleg Kolokoltsev

Oscillating sharp edges have been employed to achieve rapid and homogeneous mixing in microchannels using acoustic streaming. Here we use a perturbation approach to study the flow around oscillating sharp edges in a microchannel. This work…

Fluid Dynamics · Physics 2014-02-19 Nitesh Nama , Po-Hsun Huang , Tony Jun Huang , Francesco Costanzo

In the high field region at the head of a discharge streamer, the electron energy distribution develops a long tail. In negative streamers, these electrons can run away and contribute to energetic processes such as terrestrial gamma-ray and…

Plasma Physics · Physics 2012-09-17 Chao Li , Jannis Teunissen , Margreet Nool , Willem Hundsdorfer , Ute Ebert

By employing a local two-fluid theory, we investigate an obliquely propagating electromagnetic instability in the lower hybrid frequency range driven by cross-field current or relative drifts between electrons and ions. The theory…

Astrophysics · Physics 2007-05-23 Hantao Ji , Russell Kulsrud , William Fox , Masaaki Yamada

Quasilinear perpendicular diffusion of charged particles in fluctuating electromagnetic fields is the focus of this paper. A general transport parameter for perpendicular diffusion is presented being valid for an arbitrary turbulence…

Astrophysics · Physics 2007-05-23 O. Stawicki

In this letter we report on turbulent acceleration of the dissipation of magnetic field in the postshock re- gion of a Poynting flux-dominated flow, such as the Crab pulsar wind nebula. We have performed two- dimensional resistive…

High Energy Astrophysical Phenomena · Physics 2015-06-05 Makoto Takamoto , Tsuyoshi Inoue , Shu-ichiro Inutsuka

Scattering theory is employed to derive a Landauer-type formula for the spin and the charge currents, through a finite region where spin-orbit interactions are effective. It is shown that the transmission matrix yields the spatial direction…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 O. Entin-Wohlman , A. Aharony , Y. Tokura , Y. Avishai

The penetration of transverse magnetic flux into a thin superconducting square film in the flux flow state is considered by numerical simulation. Due to the film self-field, the governing equations are nonlinear, and in combination with the…

Superconductivity · Physics 2013-09-19 J. I. Vestgarden , Y. M. Galperin , T. H. Johansen

It is shown here that electrons on the surface of a nanotube in a perpendicular magnetic field undergo spin-chirality separation along the circumference. Stripes of spin-polarization propagate along the tube, with a spatial pattern that can…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Alex Kleiner

Granular particles vibrated in a fluid have been found to exhibit self-organization with attractive and repulsive interactions between the particles. These interactions have been attributed to the steady streaming flow around oscillating…

Soft Condensed Matter · Physics 2009-11-13 Florian Otto , Emmalee K. Riegler , Greg A. Voth

Plasma blobs are observed to be weak density enhancements as radially stretched structures emerging from the cusps of quiescent coronal streamers. In this paper, it is suggested that the formation of blobs is a consequence of an intrinsic…

Solar and Stellar Astrophysics · Physics 2011-02-11 Y. Chen , X. Li , H. Q. Song , Q. Q. Shi , S. W. Feng , L. D. Xia

We demonstrate movement of a head-to-head domain wall through a magnetic nanowire simply by passing an electrical current through the domain wall and without any external magnetic field applied. The effect depends on the sense and magnitude…

Materials Science · Physics 2016-08-31 Nicolas Vernier , Dan A. Allwood , Del Atkinson , Michael D. Cooke , Russell P. Cowburn

It has been known for a long time that light carries both linear and angular momenta parallel to the direction of propagation. However, only recently it has been pointed out that beams of light, under certain conditions, may exhibit a…

Optics · Physics 2015-02-23 Andrea Aiello , Peter Banzer

We compare the magnetic field at the center of and the self-magnetic flux through a current-carrying circular loop, with those obtained for current-carrying polygons with the same perimeter. As the magnetic field diverges at the position of…

Physics Education · Physics 2007-05-23 J. P. Silva , A. J. Silvestre

The coupling of sediment transport with the flow that drives it allows rivers to shape their own bed. Cross-stream fluxes of sediment play a crucial, yet poorly understood, role in this process. Here, we track particles in a laboratory…

Fluid Dynamics · Physics 2019-07-04 A. Abramian , O. Devauchelle , G. Seizilles , E. Lajeunesse

We investigate ballistic spin transport in a two dimensional electron gas system through magnetic barriers of various geometries using the transfer matrix method. While most of the previous studies have focused on the effect of magnetic…

Mesoscale and Nanoscale Physics · Physics 2015-06-18 Nammee Kim , Heesang Kim

Evidence of surface magnetism is now observed on an increasing number of cool stars. The detailed manner by which dynamo-generated magnetic fields giving rise to starspots traverse the convection zone still remains unclear. Some insight…

Solar and Stellar Astrophysics · Physics 2017-09-20 Maria A. Weber , Matthew K. Browning , Suzannah Boardman , Joshua Clarke , Samuel Pugsley , Edward Townsend

We consider a simple model of one-dimensional magnetic crystal and examine the propagation of an electromagnetic wave through such a medium. Calculating the dispersion relation ${\bf k}(\omega)$ allows us to illustrate how the spread of the…

Strongly Correlated Electrons · Physics 2026-05-05 Taras Krokhmalskii , Taras Verkholyak , Ostap Baran , Dmytro Yaremchuk , Taras Hutak , Oleg Derzhko
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