| Autor: |
Matt, Christian E., Liu, Yu, Pirie, Harris, Drucker, Nathan C., Jo, Na Hyun, Kuthanazhi, Brinda, Huang, Zhao, Lane, Christopher, Zhu, Jian-Xin, Canfield, Paul C., Hoffman, Jennifer E. |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
Phys. Rev. B 105, 085134 (2022) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.105.085134 |
| Popis: |
CeBi has an intricate magnetic phase diagram whose fully-polarized state has recently been suggested as a Weyl semimetal, though the role of $f$ states in promoting strong interactions has remained elusive. Here we focus on the less-studied, but also time-reversal symmetry-breaking ferrimagnetic phase of CeBi, where our density functional theory (DFT) calculations predict additional Weyl nodes near the Fermi level $E_\mathrm{F}$. We use spin-polarized scanning tunneling microscopy and spectroscopy to image the surface ferrimagnetic order on the itinerant Bi $p$ states, indicating their orbital hybridization with localized Ce $f$ states. We observe suppression of this spin-polarized signature at $E_\mathrm{F}$, coincident with a Fano line shape in the conductance spectra, suggesting the Bi $p$ states partially Kondo screen the $f$ magnetic moments, and this $p-f$ hybridization causes strong Fermi-level band renormalization. The $p$ band flattening is supported by our quasiparticle interference (QPI) measurements, which also show band splitting in agreement with DFT, painting a consistent picture of a strongly interacting magnetic Weyl semimetal. |
| Databáze: |
arXiv |
| Externí odkaz: |
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