19.06.2023
Physics and applications of spintronic nano – oscillators
We study linear and nonlinear phenomena in spintronic oscillators of various types including the spin-torque nano-oscillators (STNOs) and spin Hall oscillators (SHOs) based on ferromagnets, and SHOs based on antiferromagnets. We concentrate our efforts on the theoretical and numerical investigation of the oscillator dynamics and their electrodynamic properties, and on the R@D of microwave and (sub-)terahertz devices with embedded spintronic oscillators, optimization of the device performance.
We developed a rather general analytical theory for AC signal sources based on a single spintronic oscillator and oscillator arrays. The proposed sources based on a single antiferromagnetic SHO have output AC power ~ 10 µW at the frequency ~ 1 THz, and ten times larger if one utilizes an array of oscillators. We also consider the application of pulse generators based on antiferromagnetic SHOs as artificial “neurons” and logical circuits suitable for neuromorphic electronics.
 |
 |
Contact:
Prof. Oleksandr Prokopenko, oleksandr.prokopenko@knu.ua
Projects:
-
The President’s of Ukraine grant for competitive projects # F78/207-2018, “THz-frequency electromagnetic signal sources based on spintronic magnetic nanostructures” from the State Fund for Fundamental Research of Ukraine.
-
The President’s of Ukraine grant for competitive projects # F84/176-2019, “Ultra-fast devices for generation, detection and processing of electromagnetic signals based on antiferromagnetic spintronic nanostructures” from the State Fund for Fundamental Research of Ukraine.
Selected publications:
-
Physical Review Applied (2017) 8, 064007
-
Applied Physics Letters (2018) 113, 112401
-
IEEE Magnetics Letters (2018) 9, 3104605
-
Scientific Reports (2018) 8, 15727 (2018)