Skip to content
me
Yu Li.me
HOME RESEARCH PUBLICATIONS ABOUT
   
me
Yu Li.me
HOME RESEARCH PUBLICATIONS ABOUT

Tag: emergent electromagnetic field

push_pin When Bloch point hops through magnetic multilayers

October 27, 2021

In this Letter, we theoretically demonstrate the annihilation of single skyrmions in a multilayer structure. The process is mediated by topological hedgehog singularities known as Bloch points, whose intralayer and interlayer dynamics gives rise to intriguing emergent electromagnetic fields …

Congratulations on our new paper! ‘Tunable terahertz oscillation arising from Bloch-point dynamics in chiral magnets’

July 1, 2020

It reveals that the formation/annihilation of skyrmions will give rise to an emergent electric field with the frequency in the THz regime. The electric signal is due to the ultra-fast Bloch-point propagation, and both the amplitude and frequency can be tuned by the manipulation of Bloch-point dynamics. Our studies provide a concept of directly exploiting topological singularities which may be relevant for THz skyrmion-based electronic devices …

THz-oscillating electric signal from Bloch point dynamics

December 2, 2019

In this work, our considerations go beyond static skyrmions, and we theoretically show that the formation/annihilation of both skyrmions and antiskyrmions is enabled by the transient creation and propagation of topological singularities (magnetic monopole-like Bloch points) …

Tags of the site

2017 2018 2019 2020 2021 antiskyrmion atomic force microscopy Bloch point British-German WE-Heraeus-Seminar chiral magnets conductive filament conference core-shell defects Dzyaloshinskii-Moriya interaction (DMI) emergent electromagnetic field ferromagnetic resonances (FMR) field-induced transition HfOx HMM interconnect magnetic multilayer magnetic transition magnetisation dynamics memristor meron Monte Carlo neuromorphic computing paper performance improvement Pt/Co/Ta resistive random access memory (RRAM) resistive switching RKKY room temperature skyrmion skyrmionium skyrmion lattice spiking neural networks (SNN) supervised/unsupervised learning surface roughness TEM terahertz two‐dimensional materials