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Large curvature near a small gap

The appearance of small local gaps in the electronic band structure of a topological semimetal is attributed to a hidden quasi-symmetry that produces a large Berry curvature.

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Fig. 1: Non-trivial Berry phase despite a gap.

Christoph Hohmann.


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Correspondence to Marc A. Wilde or Christian Pfleiderer.

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The authors declare no competing financial interests, but participated in the study reported in ref. 9.

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Wilde, M.A., Pfleiderer, C. Large curvature near a small gap. Nat. Phys. (2022).

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