Professor Andrey Slavin: LETI Was at the Origins of Magnonics

Professor Andrey Slavin: LETI Was at the Origins of Magnonics

Andrey Slavin, a world-class physicist and professor at Oakland University (USA), gave a lecture at LETI as part of a series of megagrant seminars on the physical principles which will define the future of electronics.

29.10.2021 117

Professor Andrey Slavin of Oakland University (USA) made a presentation on subterahertz radiation detectors based on ferromagnetism. This research is devoted to magnonics, an emerging sub-field of physics that studies the ways of transferring energy or information in substances with the help of the current of special quasiparticles – magnons. The development in this field may lead to the invention of new, more efficient, and compact devices for storing and transmitting information.

– Professor, you have been living and working in the United States for many years, and what connects you to LETI?

– First of all, a long-standing friendship and cooperation with the Department of Physical Electronics and Technology. Since 1977, I worked with Boris Kalinikos, head of the department from 1989 to 2018, and Professor Nikolai Kovshikov, who in 1983 first discovered solitons (nonlinear wave packets, which in future may be used for long-distance information transmission) in spin waves. The paper about this experiment was well known both in Russia and in the West. At this time, magnonics became a popular trend in the scientific community.

– What contribution have scientists from our university made to the development of this field?

– In my opinion, LETI stood at the origins of magnonics, a circle of several generations of researchers was formed here. First of all, it is a credit to Orest Vendik, Head of the Department of Electron-Ion and Vacuum Technology from 1969 to 1989, who for several decades consistently researched magnonics, studied materials, their parameters, looking many years ahead. When Boris Kalinikos took over the department, these initiatives continued. I think that Professor Alexander Semenov, who now heads the Department of Physical Electronics and Technology, is a very worthy continuer of the founders' work in this direction.

In terms of experiments, LETI has been and remains among the world leaders in magnonics research. The proof of the high level of scientific achievements I consider the fact that thanks to my research at LETI, I easily found a job when I came to the United States in 1990. At the same time, all these years, I continued to cooperate with the university.

– What kind of research are you planning to do together with LETI researchers?

– We will work on magnonics, including terahertz magnonics. In addition, we plan to work on magnon crystals, a periodic structure in which the transmission of magnon waves takes place. We will try to learn how to change the parameters of wave propagation in magnon crystals.

For reference

Today, the Department of Physical Electronics and Technology implements a megagrant "Reservoir Computers Based on Magnonics Principles as a New Direction of Artificial Neural Networks." Within the projects, LETI established the Kalinikos Laboratory of Magnonics and Microwave Photonics. Its head is one of the world's leading scientists, Professor Mikhail Kostylev (University of Western Australia). In addition, a series of lectures is planned at LETI, featuring authoritative scientists in the field of magnonics from different countries; the lecture of Professor Andrey Slavin was the first one.