A key piece of the ferroelectric hafnia puzzle



SummaryThe ferroelectrics community is witnessing one of those moments in which serendipity changes the course of science. The story of ferroelectric hafnia (HfO2) resembles that of Cinderella: Not invited to the polar dielectrics ball, nanoscale HfO2 was dismissed as not being a real ferrolectric, a material that has a switchable spontaneous polarization, despite the experimental evidence for this response. On page 1343 of this issue, Lee et al. (1) bring us closer to a real-life fairy tale… A key piece of the ferroelectric hafnia puzzle