CrSb shows a nontrivial Berry phase approaching π from SdH oscillations and DFT band calculations, supporting topological semimetal states in this altermagnet.
In particular, under the LL fitting with a phase offset ofδ= - 1 8, the extracted Berry phases for both components approachπ, the comparative data are shown in Table 2
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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.