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Nanowire spin torque oscillator driven by spin orbit torques


The field of spintronics deals with the use of the spin degree of freedom of the electron and the spin current that arises from it. There are many static and dynamic applications for spin current whether it is supplied by spin polarized electric current from a magnetic layer or from spin orbit torques. This dissertation will focus on the later cases where the spin Hall effect present in platinum supplies a spin torque on an adjacent permalloy layer creating a spin torque oscillator(STO). Previous studies have demonstrated the existence of STOs in the 0-dimensional case and its absence in the 2D case therefore the 1D case, a ferromagnetic nanowire, is tackled here. This will cover the first instance of a micrometer scale STO and will show the excited modes are the edge and bulk spin wave eigenmodes of the nanowire.

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