USTC team cuts a topological crystal into a microscope tip to probe altermagnetism in KV2Se2O
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.
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