Journal article
Strong in-plane anisotropy in the electronic structure of fixed-valence β − LuAlB 4
- Abstract:
- The origin of intrinsic quantum criticality in the heavy-fermion superconductor β-YbAlB4 has been attributed to strong Yb valence fluctuations and its peculiar crystal structure. Here, we assess these contributions individually by studying the isostructural but fixed-valence compound β-LuAlB4. Quantum oscillation measurements and DFT calculations reveal a Fermi surface in βLuAlB4 markedly different from that of β-YbAlB4, consistent with a ‘large‘ Fermi surface in the latter. We also find an unexpected in-plane anisotropy of the electronic structure, in contrast to the isotropic Kondo hybridization in β-YbAlB4.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Accepted manuscript, 4.1MB, Terms of use)
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- Publisher copy:
- 10.1103/PhysRevB.102.081102
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review B More from this journal
- Volume:
- 102
- Article number:
- 081102
- Publication date:
- 2020-08-03
- Acceptance date:
- 2020-07-10
- DOI:
- Language:
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English
- Keywords:
- Pubs id:
-
1099523
- Local pid:
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pubs:1099523
- Deposit date:
-
2020-07-16
Terms of use
- Copyright holder:
- American Physical Society
- Copyright date:
- 2020
- Rights statement:
- ©2020 American Physical Society
- Notes:
- This is the accepted manuscript version of the article. The final version is available from American Physical Society at: https://doi.org/10.1103/PhysRevB.102.081102
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