Increased Efficiency of Current-Induced Motion of Chiral Domain Walls by Interface Engineering.

ABSTRACT: Magnetic racetrack devices are promising candidates for next-generation memories. These spintronic shift-register devices are formed from perpendicularly magnetized ferromagnet/heavy metal thin-film systems. Data are encoded in domain wall magnetic bits that have a chiral Néel structure that is stabilized by an interfacial Dzyaloshinskii-Moriya interaction. The bits are manipulated by spin currents generated from electrical currents that are passed through the heavy metal layers. Increased efficiency of the current-induced domain wall motion is a prerequisite for commercially viable racetrack devices. Here, significantly increased efficiency with substantially lower threshold current densities and enhanced domain wall velocities is demonstrated by the introduction of atomically thin 4d and

SUBMITTER: Guan Y 

PROVIDER: S-EPMC11468057 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature