Degree of match determination using coupled spin-torque oscillators (Conference Presentation)

Matthew Pufall

doi:10.1117/12.2278028

19 September 2017 Degree of match determination using coupled spin-torque oscillators (Conference Presentation)

Matthew Pufall

Proceedings Volume 10357, Spintronics X; 103572E (2017) https://doi.org/10.1117/12.2278028
Event: SPIE Nanoscience + Engineering, 2017, San Diego, California, United States

Abstract

Determining a ranked list or degree of match is frequent computational task, and is one that does not require high numerical precision. A variety of methods for performing such calculations are being explored, such as hardware methods based on lower precision Boolean logic and threshold logic, among others. We have been exploring nonBoolean hardware methods of performing these calculations using phase locking of spin torque oscillator arrays. In this scheme, phase locking of the oscillators in the array maps on to a distance metric based on an L2 norm. We will discuss the progress and challenges of implementing larger (>4) arrays of independently controllable spin torque oscillators into microwave systems that exhibit phase locking, and require stable, high speed, phase sensitive detection. Finally, we will discuss how these results may impact the prospects for applying such oscillator arrays to computational schemes that are more bio-inspired or neuromorphic in nature.

Conference Presentation

Citation Download Citation

Matthew Pufall "Degree of match determination using coupled spin-torque oscillators (Conference Presentation)", Proc. SPIE 10357, Spintronics X, 103572E (19 September 2017); https://doi.org/10.1117/12.2278028

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