Riken Research June 19, 2024 Recent studies have experimentally discovered several host materials for antiskyrmions have been identified, but their control via thermal current remains elusive. An international team of researchers (Japan, Germany) used thermal current to drive the transformation between skyrmions, antiskyrmions and non-topological bubbles, as well as the switching of helical states in the antiskyrmion-hosting ferromagnet (Fe0.63Ni0.3Pd0.07)3P at room temperature. They discovered that a temperature gradient drove a transformation from antiskyrmions to non-topological bubbles to skyrmions while under a magnetic field and observed the opposite, unidirectional transformation from skyrmions to antiskyrmions at zero-field, suggesting that the antiskyrmion, more […]
Tag Archives: Antiskyrmions
Magnetic whirls in future data storage devices
Eurekalert March 3, 2020 Researchers in Germany discovered that skyrmions and antiskyrmions are stabilized in different materials by a magnetic interaction that is directly tied to the structure of the host material. However, what was previously overlooked is that the magnetic dipoles also significantly interact with each other via their dipole-dipole interaction. This interaction always prefers skyrmions. For this reason, even “antiskyrmion materials” can exhibit skyrmions (but not vice versa). This happens preferably as the temperature is lowered. At a critical transition temperature, the two distinct objects coexist. The finding allows for an advanced version of the racetrack memory data […]
Magnetic antiparticles offer new horizons for information technologies
Eurekalert August 15, 2018 An international team of researchers (Germany, Sweden, France, Czech Republic) theoretically explored the dynamics of skyrmions and antiskyrmions in ultrathin ferromagnetic films and showed that current-induced spin–orbit torques can lead to trochoidal motion and skyrmion–antiskyrmion pair generation, which occurs only for either the skyrmion or antiskyrmion, depending on the symmetry of the underlying Dzyaloshinskii–Moriya interaction. They developed algorithms which predict how spin–orbit torques can control the type of motion and the possibility to generate skyrmion lattices by antiskyrmion seeding. By increasing the amount of energy transferred to the system from the applied currents, they found that […]