👈 New paper published in Physical Review Letters! 🥳 🎉🍾 (click on the image)

I’m excited to share our new paper, just published in Physical Review Letters! We revisit EuO—a simple semiconducting ferromagnet known since the 1960s—and show that it still has some remarkable surprises. When EuO is strained, it becomes multiferroic, developing a ferroelectric polarization that is tightly intertwined with its magnetization via spin–orbit coupling. In this phase, and when certain symmetry conditions are met, the band structure of EuO shows a giant non-reciprocal effect—the bands bend, and they bend a lot. Even more exciting, this leads to a colossal bulk photovoltaic response, meaning that EuO can, in principle, be harnessed for photovoltaic applications. I’m incredibly proud of the team behind this work—it was truly a collective effort—and it never ceases to amaze me how much new physics can be uncovered in systems we thought we already knew.