Tiny magnetic vortices known as skyrmions could eventually help enable computers that process information in ways resembling the human brain while using far less power. Research published in Nature Nanotechnology offers new insights into how these structures behave and how scientists can control them, potentially supporting smaller, more efficient computing systems and advances in quantum technology.
Most of the research was conducted at the Institute of Physics at Johannes Gutenberg University Mainz in Germany, in collaboration with professors at the Norwegian University of Science and Technology (NTNU).
“Skyrmions are tiny magnetic vortices that can store information in a completely new way,” explains Asle Sudbø, who heads NTNU’s Center for Quantum Spintronics (QuSpin).
Unlike conventional technologies, which generally require more space and energy as the volume of processed data increases, skyrmions could offer a more efficient alternative.
“Instead of current technologies, which always require more space and energy to process data, skyrmions could enable the construction of much smaller and more energy-efficient data storage systems,” Sudbø said.
Tiny magnetic vortices could enable brain-like computers
The potential applications of skyrmions extend beyond conventional data storage. They are also important in spintronics, a field that seeks to exploit the magnetic properties of electrons in electronic devices, as well as in research into topological quantum effects.
One particularly promising possibility is the development of computers that operate in ways similar to biological brains.
“These nanoscale vortices could help us develop computers that resemble biological brains,” Sudbø said.
Instead of relying solely on traditional transistor-based computing, such systems could use magnetism to process information. In principle, this approach could reduce power consumption and allow future computers to perform complex tasks with significantly less energy.
Turning that potential into practical technology will require scientists to understand precisely how skyrmions behave and to develop reliable ways to manipulate them. The latest research represents progress toward that goal.
Scientists observe a magnetic skyrmion lattice melting
Skyrmions do not always occur as isolated magnetic structures. Under certain conditions, they form repeating patterns known as lattices. These arrangements resemble the regular organization of atoms in a crystal, but exist on a much smaller scale.
Being able to manipulate these patterns could be essential if skyrmions are to be used in future computing devices.
In the new study, researchers recorded the melting of a magnetic skyrmion lattice while simultaneously controlling individual skyrmions. The researchers said this had not previously been demonstrated.
“For the first time, researchers have been able to image in real time how a magnetic skyrmion lattice melts, and at the same time be able to directly manipulate individual skyrmions while they are being imaged. For example, both their shape and size can be changed ‘on the fly’,” Sudbø said.
Directly observing the process gives researchers a clearer view of how the organized structures respond as they break down. It also allows them to examine how changing the size and shape of individual magnetic vortices affects their behavior.
Another step toward energy-efficient computing
Understanding how skyrmions behave as a lattice is destroyed could help scientists develop more precise methods for controlling them. That control would be particularly important if these magnetic structures become components of future computer systems.
The findings therefore provide more than a new way to observe unusual magnetic phenomena. They offer information that could help researchers address challenges involved in developing practical skyrmion-based technologies.
“This discovery gives us new insights into how this type of particle behaves, so this could be important for the development of more energy-efficient computer technologies in the future,” Sudbø said.
Skyrmions still require significant development before they could be used in everyday computing devices. However, the study highlights their potential to improve data storage, enable new computing architectures and support advances in quantum technology.
By learning to observe and manipulate these tiny magnetic vortices in real time, scientists are developing capabilities that could eventually influence the design of computers.
“This has the potential to revolutionize the way we think about computers,” Sudbø concluded.
Source: www.sciencedaily.com