Abstract
Recently, virtual domain walls (VDWs) contained within a narrow gap among discrete magnetic nanoelements without real internal spin structures and thus with a significantly suppressed stochastic nature of domain wall propagation have attracted considerable attention. In this work, the ratchet effect of VDW motion in asymmetrically shaped nanodot chains under alternating magnetic fields was numerically investigated via micromagnetic simulations. The results show that the asymmetric stray field distribution in the gap and the magnetic shape anisotropy of the nanodots are the primary causes of the VDW ratchet effect. The ratchet behavior is found to be controllable via modulation of the frequency and strength of the alternating magnetic field, as well as by modifying the geometric shape of the asymmetric nanodots. A unilateral bandpass filter based on the VDW ratchet effect is proposed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
