Memory functions of magnetic skyrmions
By W. Koshibae, Y. Kaneko, J. Iwasaki, M. Kawasaki, Y. Tokura, N. Nagaosa. 2015
136 citations recorded by the source corpus.
We study, by microsimulation on the chiral magnets, the elementary functions of magnetic skyrmions and the design principles of skyrmionic memory devices. The external stimuli, such as local heating, magnetic field, electric field and electric current, trigger the creation and annihilation of the skyrmion. These procedures, corresponding to the writing and erasing operations, are achieved typically within of the order of nano or pico seconds. We also examine the current driven motion of the skyrmions and find that the gyro-dynamics, which is induced by the topological nature of the skyrmion, leads to the variety of useful functions including the remarkable enhancement of the spin-transfer-torque effect. These features are shown to be advantageous for (a) high-density data-storage, (b) nonvolatile memory, and (c) ultra-low current and energy cost manipulation.
Subfields: Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/b3fcdf06ba4ee49bd9a1b74a8c4f8b00c049be53
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In Atomic and Molecular Physics, and Optics
In Electronic, Optical and Magnetic Materials
In Materials Chemistry
Citations in the corpus
- Room-temperature chiral magnetic skyrmions in ultrathin magnetic nanostructures. (2016, background): “An additional important feature is that skyrmions can be manipulated by in-plane currents [11–14] which has led to novel concepts of non-volatile magnetic memories [7, 15] and logic devices [16] where skyrmions in nanotracks are the information carriers.”