Journal article
Quantum oscillations in the Zeroth Landau level: serpentine Landau fan and the chiral anomaly
- Abstract:
- We identify an unusual mechanism for quantum oscillations in nodal semimetals, driven by a single pair of Landau levels periodically closing their gap at the Fermi energy as a magnetic field is varied. These `zero Landau level' quantum oscillations (ZQOs) appear in the nodal limit where the zero-field Fermi volume vanishes, and have distinctive periodicity and temperature dependence. We link the Landau spectrum of a two-dimensional (2D) nodal semimetal to the Rabi model, and show by exact solution that across the entire Landau fan, pairs of opposite-parity Landau levels are intertwined in a `serpentine' manner. We propose 2D surfaces of topological crystalline insulators as natural settings for ZQOs, and comment on implications for anomaly physics in 3D nodal semimetals.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Accepted manuscript, 1.6MB, Terms of use)
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- Publisher copy:
- 10.1103/PhysRevLett.127.116602
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review Letters More from this journal
- Volume:
- 127
- Article number:
- 116602
- Publication date:
- 2021-09-09
- Acceptance date:
- 2021-08-05
- DOI:
- EISSN:
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1079-7114
- ISSN:
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0031-9007
- Language:
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English
- Keywords:
- Pubs id:
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1158003
- Local pid:
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pubs:1158003
- Deposit date:
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2021-08-05
Terms of use
- Copyright holder:
- American Physical Society
- Copyright date:
- 2021
- Rights statement:
- © 2021 American Physical Society
- Notes:
- This is the accepted manuscript version of the article. The final version is available online from American Physical Society at: https://doi.org/10.1103/PhysRevLett.127.116602
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