ERA NanoSci - Nanowire based Microwave Emitters for Use in Monolithic Microwave Integrated Circuits (NanoWave)

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The scientific objective is to develop an understanding of the phase coherency and the mechanism of phase locking in arrays of nano-contacts in the process of spin polarised induced generation of microwaves by spin torque.We shall focus on the microwave oscillator and its dependency on the size and separation between individual nanocontacts.The nanocontacts shall be formed by intersection of an array of magnetic nanowires and cross-electrodes.We shall investigate the effect of the coherent coupling of microwave emissions from such arrays and determine the power enhancement as a factor of proximity between the neighbouring nanowires or between magnetic contacts positioned along the same nanowire. Project innovations are the self-assembly of arrays of nanocontacts using a deposition technique capable of forming planar arrays of nanowires and the geometry of magnetic nanocontacts that allows for experiments with large angle between magnetic moments of the two ferromagnetic layers.