A necklace of fractional vortices
Researchers at Chalmers University of Technology have arrived at how what is known as time-reversal symmetry can break in one class of superconducting material. The results have been published in the highly ranked Nature Physics journal, which also put the Chalmers researchers' study on the cover.
“Symmetries are an important aspect when describing nature”, says Mikael Fogelström, who is a professor of theoretical physics at Chalmers University of Technology. “A ball is round and looks the same regardless of how we rotate it; thus, it has rotational symmetry. In the same way, most