Current-induced magnetic skyrmions oscillator
By Senfu Zhang, Jianbo Wang, Qi Zheng, Qiyuan Zhu, Xianyin Liu, Shujun Chen, Chendong Jin, Qingfang Liu, C. Jia, D. Xue. 2015
163 citations recorded by the source corpus.
Spin transfer nano-oscillators (STNOs) are nanoscale devices which are promising candidates for on-chip microwave signal sources. For application purposes, they are expected to be nano-sized, to have broad working frequency, narrow spectral linewidth, high output power and low power consumption. In this paper, we demonstrate by micromagnetic simulation that magnetic skyrmions, topologically stable nanoscale magnetization configurations, can be excited into oscillation by a spin-polarized current. Thus, we propose a new kind of STNO using magnetic skyrmions. It is found that the working frequency of this oscillator can range from nearly 0 Hz to gigahertz. The linewidth can be smaller than 1 MHz. Furthermore, this device can work at a current density magnitude as small as 108 A m−2, and it is also expected to improve the output power. Our studies may contribute to the development of skyrmion-based microwave generators.
Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics
View Paper: https://www.semanticscholar.org/paper/f063025f6ebe76c3d50fe3008a7c6589ae25630d
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In Atomic and Molecular Physics, and Optics
In Condensed Matter Physics
Citations in the corpus
- Skyrmions in magnetic multilayers (2017, background): “73 From the applied point of view, many skyrmion based innovative device concepts have been proposed such as skyrmion racetrack memory [308, 309], skyrmion-based cache memory [310], skyrmion nano-oscillators [257, 311, 312], skyrmion transistors [313], skyrmion synaptic devices [314, 315], and skyrm”