CrSb shows a nontrivial Berry phase approaching π from SdH oscillations and DFT band calculations, supporting topological semimetal states in this altermagnet.
The third frequency,F 3, gave an intercept ofn 0 = -0.1667, which corresponds to Φ = 0.4167πforδ= + 1 8 and Φ = 0.9167πforδ= - 1
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Topological nontrivial berry phase in altermagnet CrSb
CrSb shows a nontrivial Berry phase approaching π from SdH oscillations and DFT band calculations, supporting topological semimetal states in this altermagnet.