CMOS compatible W/CoFeB/MgO spin Hall nano-oscillators with wide frequency tunability

Abstract

We demonstrate low-operational-current W/Co${}_{20}$Fe${}_{60}$B${}_{20}$/MgO spin Hall nano-oscillators (SHNOs) on highly resistive silicon (HiR-Si) substrates. Thanks to a record high spin Hall angle of the $\beta$-phase W (${\theta }_{SH}$ = -0.53), a very low threshold current density of 3.3 $\times$ 10${}^7$ A/cm${}^2$ can be achieved. Together with their very wide frequency tunability (7-28 GHz), promoted by a moderate perpendicular magnetic anisotropy, this makes HiR-Si/W/CoFeB based SHNOs potential candidates for wide-band microwave signal generation. Their CMOS compatibility offers a promising route towards the integration of spintronic microwave devices with other on-chip semiconductor microwave components.

6 pages, 4 figures

References in corpus (12)

• Spin torque switching with the giant spin Hall effect of tantalum
• Spin Hall effect
• Spin Torque Ferromagnetic Resonance Induced by the Spin Hall Effect
• Spin transfer torque devices utilizing the giant spin Hall effect of tungsten
• Magnetic oscillations driven by the spin Hall effect in 3-terminal magnetic tunnel junction devices
• Giant Spin Hall Effect Induced by Skew Scattering from Bismuth Impurities inside Thin Film CuBi Alloys
• Generation of coherent spin-wave modes in Yttrium Iron Garnet microdiscs by spin-orbit torque
• Origin of interfacial perpendicular magnetic anisotropy in MgO/CoFe/metallic capping layer structures
• On the origin of magnetization auto-oscillations in constriction-based spin Hall nano-oscillators
• Microwave power generated by a spin-torque oscillator in the presence of noise
• Large enhancement of the spin Hall effect in Au by scattering with side-jump on Ta impurities
• All-optical Detection of Spin Hall Angle in W/CoFeB/SiO2 Heterostructures by Varying Tungsten Layer Thickness

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