Augusta University Global Research Connects with Einstein – Jagwire
Basically, in the context of magnetic response, the conservation of rotational laziness, or what physicists call rotational inertia, is known as the “Einstein-de Haas effect,” Datta said.
In an article recently published in Physical examination of research, Datta and Yao succeeded in marrying Einstein’s proof of the principle of conservation of the momentum of rotation with the concept of topology of contemporary mathematical physics. Together with their graduate student, Jun Li, they developed a theoretical model that explains the Einstein-de Haas effect of topological magnets.
“Topology is the branch of mathematics that considers a donut to be the same as a coffee cup because they both have a single perforation or a single hole,” Datta said. “What is fascinating is that Einstein did an experiment like this 115 years ago and all of a sudden you can quickly move this experimental investigation forward to the idea of the analogy between the donut and the cup of coffee in the magnetism and it’s very modern, but the fact that you can connect these two pieces is pretty cool.
While magnets with the north and south poles have been around for many decades and can easily be purchased at any hardware store, new classes of magnets have recently been discovered, Datta said.
For example, the type of topological magnet that Datta works with was discovered in 2018.
And, in 2020, an international team led by researchers at Princeton University discovered another new class of magnets that exhibit novel quantum effects that extend to room temperature.
Although this is a different type of topological magnet than what Datta is currently researching, the team at Princeton University have discovered a quantized topological phase in a blank magnet, according to a study published the year last in the review, Nature.
“These types of topological magnets are a reality,” Datta said.
One of the reasons Datta wanted to work with Yao on this research was because it reveals a whole different side to Einstein to the world.
“It’s important when you think of Einstein, you don’t just think of him as someone who just theorized,” Datta said. “This person had a deep understanding of experiments, of how to conduct experiments and how to motivate experimenters to experiment.
“The fact that Einstein had this experiment so many years ago and that it is still relevant today and can be made useful now is something that I think is of great scientific importance.”
Once the COVID-19 pandemic is finally over, Datta said he was eager to return to Sun Yat-sen University to continue research efforts at both universities.
“Being able to reach the whole world is useful and spreads the name of Augusta University around the world,” Datta said. “While I am currently collaborating with Sun Yat-sen University, I am also collaborating with two other research institutes: one in Switzerland and another in Japan to explore the physics of new magnetic materials. So it’s a giant collaborative effort that really benefits Augusta University. “