Multiferroic materials can host intriguing phenomena due to the simultaneous breaking of both spatial inversion symmetry and time reversal symmetry. Here, three-dimensional imaging of ...

Nonlinear optical effects occur when light interacts with materials that lack inversion symmetry. It was previously thought that these effects were uniformly distributed throughout the material.

"Remarkably, due to inversion symmetry, altermagnets have vanishing second-order response," explained Ghorashi. "Therefore, ...