A Handbook for Transverse Engineering and Nanomagnets, the manual can help to design and manufacture nano-magnet devices.
An international group of researchers from the University of California, Riverside and the Institute of Magnetism in Kyiv, Ukraine, has developed a comprehensive manual for spin engineering in nanomagnets – an important step for the advancement of spintronics and quantum information technology.
Despite their small size, nanomagnets – found in many spintronics applications – reveal a wide range of excitons, or “magnons,” the quantum order of spin changes. Because of its nanoscale properties, a nanomagnet can be viewed as a free-dimensional system with discrete magnons, similar to atoms.
Igor Barsukov, assistant professor of astrophysics at UC Riverside and author of the corresponding paper published in the journal Physical Review Applied said: “Magnons interact with each other, so making it unusual.
“Nonlinear spin dynamics is a major challenge and a major opportunity to improve the performance of spintronic technologies such as spin torque memory, oscillators, and neuromorphic computing.”
Barsukov explained that the interaction of magnons follows a set of rules – the selection rules. Researchers have now postulated these rules in terms of symmetries of magnetization patterns and magnon profiles.
The new work continues efforts to develop nanomagnets for next-generation computing technology. In a previous publication, the team experimentally demonstrated that symmetry can be used to engineer magnon interactions.
“We understand the opportunity, but we also realize that there is still a lot of work to be done to understand and develop the law of choice,” said Barsukov.
According to the researchers, the complete theory reveals the mechanism behind the magnon interaction.
Arezoo Etesamirad, first author of the paper who worked in Barsukov’s laboratory and recently received a doctorate in physics, said, “It can be seen as a guide for spintronics labs for debugging and designing nanomagnet devices.
“It lays the foundation for the development of a single experimental device for magnetic neurons, switchable oscillators, efficient energy storage, and next-generation quantum nanomagnetic and other applications.”
Source: University of California, Riverside
