Dynamical Solitons in Individual and Mutually Synchronized Spin-torque and Spin-hall Effect Driven Nano-oscillators
Date:
26 Feb, 2016 (Fri)
Time:
3:30 pm
Location:
Room 603

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Speaker

Professor Johan Åkerman
University of Gothenburg
Sweden

Abstract

Nano-contact spin-torque nano-oscillators (STNOs) and spin Hall effect nano-oscillators (SHNOs) provide excellent playgrounds for the study of highly non-linear and nano-scopic spin wave modes and phenomena. While originally studied for their potential as highly broadband microwave signal generators, these devices now attract a rapidly growing interest as spin wave generators in magnonic devices and as skyrmion injectors in magnetic nanowire based memories. In my talk I will give an overview of how magnetodynamical solitons, such as spin wave bullets, magnetic droplets, and dynamical skyrmions, can be nucleated and controlled in both STNOs and SHNOs and how these, as well as propagating spin waves, can be utilized to mutually synchronize a very large number of STNOs and SHNOs.

 

Biography of the speaker:

Johan Åkerman is Professor in Experimental Physics at University of Gothenburg, Guest Professor at KTH Royal Institute of Technology in Stockholm, and founder and CEO of two start-up companies, NanOsc AB and NanOsc Instruments AB. Johan has been working with spintronic technology for the last 15 years and has authored over 200 scientific papers. Johan has a PhD from KTH Royal Institute of Technology, did a postdoc at University of California, San Diego, and was, for four years, responsible for MRAM reliability at Motorola and Freescale Semiconductors, before returning to Sweden and academic research. His main projects are related to spin torque and spin Hall nano-oscillators, with particular focus on mutual synchronization and magnetodynamical solitons.


Organizer

Dr. P.W.T. Pong

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