Deterministic multi-level spin orbit torque switching using He+ microscopy patterning

Abstract

He${}^{+}$ ion irradiation is used to pattern multiple areas of Pt/Co/W films with different irradiation doses in Hall bars. The resulting perpendicular magnetic anisotropy landscape enables selective multilevel current-induced switching, with full deterministic control of the position and order of the individual switching elements. Key pattern design parameters are specified, opening a way to scalable multilevel switching devices.

arXiv comment7 pages, 3 figures

References in corpus (5)

• Ultrafast magnetization switching by spin-orbit torques
• Tuning a binary ferromagnet into a multi-state synapse with spin-orbit torque induced plasticity
• Helium Ion Microscopy for Reduced Spin Orbit Torque Switching Currents
• Mimicking synaptic plasticity with wedged Pt/Co/Pt spin-orbit torque device
• All-Linear Multistate Magnetic Switching Induced by Electrical Current

Cited by in corpus (1)

• Initialization-Free Multistate Memristor: Synergy of Spin-Orbit Torque and Magnetic Fields