Sentences with phrase «called skyrmions»

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.

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.

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.

Not exact matches

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 material.

But physicists are now fashioning a new parallel system called spintronics — of which skyrmions are a part — based on the motion of electron spin, that property that makes atoms magnetic (SN Online: 9/26/17).

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

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

The skyrmions, as these tiny whirls are called after the British nuclear physicist Tony Skyrme, follow a complex trajectory and even continue to move after the external excitation is switched off.

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).

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.

«The measurements show that the skyrmions move on a very complex trajectory, a so - called hypo - cycloid,» says Krüger.

To make skyrmion bubbles, researchers crafted a setup made out of tiny, precise, layered structures made using a process called lithography at the Center for Nanoscale Materials, a DOE Office of Science user facility at Argonne.