ELECTRONICS ENGINEERING - SEMINAR ANNOUNCEMENT
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.
Biography: Mehmet 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