EE Seminar: Integrated magnetic device demonstrations for telecom...
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Integrated magnetic device demonstrations for telecommunications, data storage and processing


Mehmet Cengiz Onbaşlı




Abstract: Using magnons (quantized collective spin oscillations, with or without current flow) for highly-efficient and fast computation is proposed. We present our demonstrations of 3 building blocks for achieving magnonic computation, telecommunications and data storage:


1) a magneto-optical isolator, ‘i.e. an optical diode’, integrated on silicon platform in order to achieve one-way flow of light.


2) We demonstrate magnetic insulator thin films (thickness < 200 nm) which can let magnons propagate over several mm’s to cm (ultra-low Gilbert damping ~ 2 x 10-4) without current flow or Ohmic losses. After that, we use a bilayer structure of Bi2Se3 (topological insulator: insulating film, conducting surface) and a magnetic insulator Y3Fe5O12 (YIG) thin film to switch only the surface currents in order to achieve nonreciprocal one-way flow of spins.


3) a two-terminal solid-state memory component (SrTi0.7Co0.3O3-d thin film on Silicon) that can store ferroelectric (ON/OFF) and ferromagnetic (ON/OFF) states independently.




BiographyMehmet Cengiz Onbaslı received his Ph.D. and B.S. degrees from MIT Dept. of Materials Science and Engineering and Bilkent University Dept. of Electrical and Electronics Engineering, respectively. He is currently a research scientist Corning Incorporated.



February 10, 2016 – 12:40, FENS G032