ScienceWhat Are Skyrmions?

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A skyrmion can be described as a swirling quasi-particle, a knot of twisting field lines, or a subatomic hurricane. They’re also one of the most difficult physics concepts for humans to understand. That’s because these nano-size disturbances are easiest to describe mathematically and, despite being known about for nearly 60 years, physicists have only recently started to find practical applications for skyrmions. 

History of skyrmions

Skyrmions are named for British nuclear physicist Tony Skyrme, who first proposed their existence in 1961. His idea was to model subatomic entities like protons and neutrons using convoluted twists in the quantum field that all particles possess, according to the American Physical Society. While the concept was useful in many ways, such as accurately predicting some of the properties of fundamental particles like quarks and gluons, it struggled with other aspects of nuclear behavior. 

The idea was eventually superseded by a theory known as quantum chromo-dynamics, which was more successful at modeling subatomic particles. But skyrmions have been revived by researchers working on magnetic fields, which can also be coaxed into forming vortex-like swirls.

What are skyrmions good for?

Because skyrmions are so small and stable, physicists are interested in controlling these particle-like entities for use in futuristic computers and electronic memory storage, according to Physics Today. Initially, researchers could only induce magnetic skyrmions in materials that had been cooled to very cold temperatures, but they are now routinely produced in room-temperature objects. 

Since it takes relatively little power to maintain and electronically access data stored in magnetic skyrmions, engineers think these particles could make for very efficient memory-storage devices. An emerging field called skyrmionics is now dedicated to creating such next-generation appliances.

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Acknowledgements

All authors must admit to a dependence on the work of others. We are no exception. We owe a huge debt of gratitude to all the publications and reference sources that we have consulted and adapted for educational purposes. It would also have been quite impossible to have produced the material on this website without adapting a variety of authentic resources that we have regularly referred to. While every effort has been made, it has not always been possible to identify and cite the sources of all the material used or to trace all copyright holders. We will be happy to omit any contents or include any appropriate acknowledgements when they are brought to our notice.

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