Field-free spin-orbit torque switching assisted by in-plane unconventional spin torque in ultrathin [Pt/Co]_N.

ABSTRACT: Electrical manipulation of magnetization without an external magnetic field is critical for the development of advanced non-volatile magnetic-memory technology that can achieve high memory density and low energy consumption. Several recent studies have revealed efficient out-of-plane spin-orbit torques (SOTs) in a variety of materials for field-free type-z SOT switching. Here, we report on the corresponding type-x configuration, showing significant in-plane unconventional spin polarizations from sputtered ultrathin [Pt/Co]_N, which are either highly textured on single crystalline MgO substrates or randomly textured on SiO₂ coated Si substrates. The unconventional spin currents generated in the low-dimensional Co films result from the strong orbital magnetic moment, whi

SUBMITTER: Xue F 

PROVIDER: S-EPMC10319890 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature