Sentences with phrase «skyrmions in»

Magnetization dynamics leading to four skyrmions in the inside of a domain - wall ring are protected against fluctuations outside the ring.

Room - temperature chiral magnetic skyrmions in ultrathin magnetic nanostructures.

Tunable room - temperature magnetic skyrmions in Ir / Fe / Co / Pt multilayers.

Hall and colleagues created their skyrmion in a state of matter called a Bose - Einstein condensate, composed of atoms cooled to a temperature so low that they all take on the same quantum state and begin acting as if they are one unified entity (SN: 10/13/01, p. 230).

«This effect has to be taken into account to enable the distinct positioning of the skyrmion in the memory.»

Not exact matches

A magnetic structure proposed for the natural oddity known as ball lightning makes an appearance in a newfound variety of a knotlike entity called a skyrmion, a team of scientists reports.

In fact, skyrmions were first proposed in the context of particleIn fact, skyrmions were first proposed in the context of particlein the context of particles.

Magnetic skyrmions: advances in physics and potential applications.

Within a skyrmion, the direction of the atoms» poles twists until the magnetization in the center points in the opposite direction of the magnetization outside.

The result showed that a skyrmion racetrack might actually work, says study coauthor Mathias Kläui, a condensed matter physicist at Johannes Gutenberg University Mainz in Germany.

Spontaneous atomic - scale magnetic skyrmion lattice in two dimensions.

In a 2008 paper in Science, Parkin and colleagues demonstrated the beginnings of a racetrack memory based not on skyrmions, but on magnetic features called domain walls, which separate regions with different directions of magnetization in a materiaIn a 2008 paper in Science, Parkin and colleagues demonstrated the beginnings of a racetrack memory based not on skyrmions, but on magnetic features called domain walls, which separate regions with different directions of magnetization in a materiain Science, Parkin and colleagues demonstrated the beginnings of a racetrack memory based not on skyrmions, but on magnetic features called domain walls, which separate regions with different directions of magnetization in a materiain a material.

On the racetrack, skyrmions might hit a wall instead of staying in their lanes.

Skyrmions, which dwell within such magnetic habitats, are composed of groups of atoms with their magnetic poles oriented in whorls.

The magnetic knots» nimble nature suggests that skyrmions storing data in a computer could be shuttled to a sensor that would read off the information as the skyrmions pass by.

Skyrmions could help scientists achieve this kind of computation in the lab, without sapping much power.

Although scientists now know how to make room - temperature skyrmions, the heat - tolerant swirls, tens to hundreds of nanometers in diameter, tend to be too big to be very useful.

Stacking multiple layers of iridium, platinum and cobalt, Cros and colleagues created the first room - temperature skyrmions smaller than 100 nanometers, the researchers reported in May 2016 in Nature Nanotechnology.

«The type of skyrmions you get is related to the crystal structure of the materials,» says physical chemist Claudia Felser of the Max Planck Institute for Chemical Physics of Solids in Dresden, Germany.

Bloch skyrmions are found in the thick, asymmetric crystals in which skyrmions were first detected, and Néel skyrmions tend to show up in thin films.

Instead, skyrmions might be useful in devices meant for performing calculations.

Whether or not skyrmions end up in future gadgets, the swirls are part of a burgeoning electronics ecosystem.

Felser, Parkin and colleagues detected a new kind of skyrmion, an antiskyrmion, in a thin layer of such a material.

One thing, however, has held skyrmions back: Until recently, they could be created and controlled only in the frigid cold.

Skyrmions don't move in the same direction as an electric current, but at an angle to it.

Ranging from a nanometer to hundreds of nanometers in diameter, skyrmions «are probably the smallest magnetic systems... that can be imagined or that can be realized in nature,» says physicist Vincent Cros of Unité Mixte de Physique CNRS / Thales in Palaiseau, France.

When condensed matter physicist Christos Panagopoulos of Nanyang Technological University in Singapore and colleagues fiddled with the composition of layers of iridium, iron, cobalt and platinum, a variety of skyrmions swirled into existence.

Reported in Nature Physics in 2011, those thin film skyrmions required a chilly 11 kelvins -LRB--- 262 ° C).

The first type of skyrmion detected, called a Bloch skyrmion, appears in asymmetric crystals.

Observation of room - temperature magnetic skyrmions and their current - driven dynamics in ultrathin metallic ferromagnets.

In racetrack devices, information - holding skyrmions would speed along a magnetic nanoribbon, like cars on the Indianapolis Motor Speedway.

The future of data storage is likely to be found in nanometer scale, stable magnetic whirls called skyrmions, which behave like particles in magnetic thin films.

The researchers focused on a type of skyrmion called the Néel skyrmion, which exists in ultrathin films deposited on metals with a strong DMI.

This effect will be especially important when one wants to move a skyrmion to a selected position as necessary in a future memory device.

Now, a research group in Singapore has used computer simulations to further probe the behaviors of skyrmions, gaining insight that can help scientists and engineers better study the quasi-particles in experiments.

Increasing the magnetic field also induces the skyrmions to change phase relative to one another, from being arranged in ordered arrays like a crystal to randomly distributed and isolated.

Skyrmions are small whirls in the magnetization of magnetic materials.

Because they're stable, only a few nanometers in size, and need just small electric currents to transport them, skyrmions hold potential as the basis for ultra-compact and energy - efficient information storage and processing devices in the future.

In the case of the present work, the skyrmions have a diameter of less than 100 nanometers.

«We have also shown that the dynamic skyrmions can generate much stronger output in spintronic oscillators, so the potential use for this new phenomenon is great,» he says.

The new results, published in AIP Advances, from AIP Publishing, could also lead to skyrmion - based devices such as microwave nano - oscillators, used in a range of applications including wireless communication, imaging systems, radar and GPS.

Synthetic electromagnetic knot in a three - dimensional skyrmion.

The team showed that a magnetic skyrmion can be created under a nanocontact, in which a spin - polarized current is injected into the magnetic thin film providing a so - called spin torque to its magnetic moments.

In the magnetic vortices — the skyrmions — the «atomic bar magnets» of the iron atoms spin around (orange and green arrows) and have an opposite orientation in their centres (blue arrowsIn the magnetic vortices — the skyrmions — the «atomic bar magnets» of the iron atoms spin around (orange and green arrows) and have an opposite orientation in their centres (blue arrowsin their centres (blue arrows).

A skyrmions can also be stabilized by the spinning motion around its own axis, in a way that's similar to how a top stabilizes itself.

Because the mode frequencies of skyrmions are in the microwave range, the quasi-particles could be used for new microwave nano - oscillators, which are important building blocks for microwave integrated circuits.

Observed in 2009, skyrmions arise from the collective behavior of electrons in magnetic materials under certain conditions.

In order to use skyrmions as a storage medium, it must be possible to manufacture the surfaces or interfaces on a sufficiently large scale, they must contain enough of the magnetic material, and the magnetic vortex must also occur at room temperature.

Once created, they can be transported over distances of several hundreds nanometers, which means that skyrmions can be created and manipulated in materials that have never before been considered for skyrmionics.

Magnetic vortices — so - called skyrmions — were predicted theoretically more than 25 years ago, but it has only been possible to observe them experimentally in magnetic materials in recent years.