Altermagnets are characterized by fully compensated magnetic moments yet break time-reversal symmetry, leading to symmetry-enforced momentum dependent spin splitting. While demonstrations of almagnetism have typically proceeded via spectroscopic probes like ARPES, here Mali, Zhao and coauthors show that nonlinear transport can serve as a sensitive probe to screen for altermagnetic candidates, using Ca3Ru2O7 as a case study.
- Subin Mali
- Yufei Zhao
- Zhiqiang Mao