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Quantum oscillations probe the Fermi surface topology of the nodal-line semimetal CaAgAs

Abstract:

Nodal semimetals are a unique platform to explore topological signatures of the unusual band structure that can manifest by accumulating a nontrivial phase in quantum oscillations. Here we report a study of the de Haas–van Alphen oscillations of the candidate topological nodal line semimetal CaAgAs using torque measurements in magnetic fields up to 45 T. Our results are compared with calculations for a toroidal Fermi surface originating from the nodal ring. We find evidence of a nontrivial π ...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevResearch.2.012055

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Publisher:
American Physical Society Publisher's website
Journal:
Physical Review Research Journal website
Volume:
2
Article number:
012055(R)
Publication date:
2020-03-06
Acceptance date:
2019-12-23
DOI:
Source identifiers:
1078866
Language:
English
Keywords:
Pubs id:
pubs:1078866
UUID:
uuid:94aeb5e2-7ab0-4ee2-a54a-b247e42f1f29
Local pid:
pubs:1078866
Deposit date:
2019-12-24

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