Enhancing Field-Like Efficiency Via Interface Engineering with Sub-Atomic Layer Ta Insertion.

ABSTRACT: The prevailing research emphasis has been on reducing the critical switching current density (J_c) by enhancing the damping-like efficiency (β_DL). However, recent studies have shown that the field-like efficiency (β_FL) can also play a major role in reducing J_c. In this study, the central inversion asymmetry of Pt-Co is significantly enhanced through interface engineering at the sub-atomic layer of Ta, thereby inducing substantial alterations in the β_FL associated with the interface. The β_FL has shown a 123% increase, from -1.66 Oe/(MA cm^{- 2}) to -3.8 Oe/(MA cm^{- 2}). As a result, the multilayered Ta/Pt/Ta (0.3 nm insertion)/Co/Ta structure leads to a notable decrease in J_c,

SUBMITTER: Wang S 

PROVIDER: S-EPMC11809412 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature