Researchers 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 Nature Physics.
"Symmetries are an important aspect when describing nature. A ball is round and looks the same regardless of how we rotate it; thus, it has rotational symmetry. In the same way, most materials have symmetries that describe what the materials look like and what their properties are. If one or more symmetries breaks, this signals a phase transition to a new state. When a material becomes magnetic, a more abstract symmetry, what is known as time-reversal symmetry, is broken," says Mikael Fogelström, who is a professor of theoretical physics at Chalmers.
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