Quantum oscillations reveal sixfold fermions in cubic $β$-PtBi$_2$
Fuente:
arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
| Accesso online: | |
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| _version_ | 1866918093838614528 |
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| author | Bavaro, E. F. Castro, J. Vildosola, V. Facio, J. I. Correa, V. F. |
| author_facet | Bavaro, E. F. Castro, J. Vildosola, V. Facio, J. I. Correa, V. F. |
| contents | We report a study of de Haas-van Alphen oscillations in high-quality single crystals of cubic $β$-PtBi$_2$. In combination with density functional theory calculations, we identify quantum oscillations associated with all Fermi surface sheets predicted by theory. Our results uncover three small electron pockets centered on a sixfold band-touching point located approximately 25 meV below the Fermi level at the $R$ point of the Brillouin zone. These findings firmly establish the presence of sixfold fermions in close proximity to the Fermi energy of $β$-PtBi$_2$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_11791 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quantum oscillations reveal sixfold fermions in cubic $β$-PtBi$_2$ Bavaro, E. F. Castro, J. Vildosola, V. Facio, J. I. Correa, V. F. Strongly Correlated Electrons We report a study of de Haas-van Alphen oscillations in high-quality single crystals of cubic $β$-PtBi$_2$. In combination with density functional theory calculations, we identify quantum oscillations associated with all Fermi surface sheets predicted by theory. Our results uncover three small electron pockets centered on a sixfold band-touching point located approximately 25 meV below the Fermi level at the $R$ point of the Brillouin zone. These findings firmly establish the presence of sixfold fermions in close proximity to the Fermi energy of $β$-PtBi$_2$. |
| title | Quantum oscillations reveal sixfold fermions in cubic $β$-PtBi$_2$ |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2507.11791 |