Fig. 1: Device fabrication and electrical observation.
From: Spin-wave-mediated mutual synchronization and phase tuning in spin Hall nano-oscillators
a, Schematic of two nano-constriction SHNOs and their connection to the measurement set-up. Shown is the magnetic field (H) and its orientation (θ and ϕ). b, Configuration of the material stack used in the fabrication of the W/CoFeB/MgO SHNOs with PSWs. c, Scanning electron microscope image of the fabricated device with dimensions w = 150 nm and d = 500 nm. d,e, Power spectral density (PSD) versus applied current (Id.c.) for the nano-constrictions of PMA-based W/CoFeB/MgO (d) and in-plane-anisotropy-based W/NiFe (e). f,g, Illustrations of in-phase (f) and anti-phase (g) mutual synchronization. HiR-Si sub, high-resistivity Si substrate; SA, spectrum analyser; LNA, low-noise amplifier; f, frequency.
