A joint publication with Jairo Sinova and Libor Šmejkal about the spontaneous anomalous Hall effect in a magnetic semicoductor has been published in Physical Review Letters.
They observe a spontaneoeus anomalous Hall signal without external magnetic fields in the semiconductor MnTe. The anomalous Hall effect arises from an unconventional phase with strong time-reversal symmetry breaking and alternating spin polarization in real-space crystal structure and momentum-space electronic structure.
You can find the publication under PhysRevLett.130.036702