Cited 0 time in webofscience Cited 0 time in scopus

Non-equilibrium chiral domain wall dynamics excited by transverse magnetic field pulses

Title
Non-equilibrium chiral domain wall dynamics excited by transverse magnetic field pulses
Authors
Cho, JaehunKim, Kyoung-WhanLee, Myoung-JaeLee, Hyeon-JunKim, June-Seo
DGIST Authors
Cho, Jaehun; Kim, Kyoung-Whan; Lee, Myoung-JaeLee, Hyeon-JunKim, June-Seo
Issue Date
2021-01
Citation
Journal of Physics: Condensed Matter, 33(1)
Type
Article
Article Type
Article
Author Keywords
chiralitymagnetic domain wall motionDzyaloshinskii-Moriya interactionneuromorphic device
Keywords
DZYALOSHINSKII-MORIYA INTERACTIONMOTIONSKYRMIONSDRIVENMEMRISTOR
ISSN
0953-8984
Abstract
Non-equilibrium domain wall dynamics on a perpendicularly magnetized nanowire manipulated by the transverse magnetic field pulse are numerically investigated. We systematically observe the large displacements of the chiral domain wall and the domain wall tilting angles generated by Dzyaloshinskii-Moriya interaction during the competition between the precession torque and the magnetic damping process. The magnetic-property-dependent domain wall displacements exhibit that the lower magnetic damping constants and Dzyaloshinskii-Moriya energy densities generate the longer transition times and the significant larger domain wall displacements for the non-equilibrium magnetization dynamics. Compare with the spin-polarized-current-driven domain wall dynamics, the transverse magnetic field pulses guarantee faster domain wall movements without Walker breakdown and lower energy consumptions because it is free from the serious Joule heating issue. Finally, we demonstrate successive chiral domain wall displacements, which are necessary to develop multilevel resistive memristors for next-generation artificial intelligent devices based on magnetic domain wall motions. © 2020 IOP Publishing Ltd.
URI
http://hdl.handle.net/20.500.11750/12536
DOI
10.1088/1361-648X/abb64f
Publisher
Institute of Physics Publishing
Related Researcher
  • Author Lee, Hyeon-Jun  
  • Research Interests 산화물반도체;IGZO;memristor;멤리스터;저항메모리;resistance memory;neuromorphic;device;degradation;hot electron;display device;gate driver;oxide semiconductor
Files:
There are no files associated with this item.
Collection:
Division of Nanotechnology1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE