Topic
Magnetic phases that break time-reversal symmetry while spins largely cancel, leaving almost no net magnetization.
Calculations by Xiong and Jia show a graphene-MnPS3 stack switching between altermagnetic and ferrimagnetic states across a 28 meV/f.u. sliding barrier. Under out-of-plane pressure the computed spin splitting reaches 72.2 meV and 80.2 meV in the two phases.
Reality
USTC-led researchers shaped alpha-Bi4Br4 crystals into scanning tunneling microscope tips and report converging evidence of 2D d-wave altermagnetism on KV2Se2O. The tip's spin sensitivity can change with bias polarity, so one kind of probe can tie atomic structure to spin response.
Reality
UCF physicists led by Madhab Neupane report signatures of altermagnetism in Co1/4TaSe2, a layered crystal containing magnetic cobalt atoms. The evidence is surface maps of its electron bands, so device builders get a well-characterized test material whose spin currents still need measuring.
Reality
Rice, Minnesota and Paul Scherrer researchers report spin textures consistent with unconventional magnetism in ruthenium dioxide films a few atomic layers thick, and only when the lattice is strained, which makes strain a candidate control knob.
Reality
A Physical Review X paper reports that stretching hexagonal manganese telluride merges its magnetic domains and reverses the sign of its anomalous Hall voltage, leaving the magnetic order intact.
Reality