X-ray spectroscopic investigation of crystal fields in Ce2Rh1−𝑥Ir𝑥In8 heavy fermions
The higher dimensionality in the crystal fields of the Ce2𝑀In8 (𝑀=Rh,Ir) compounds and its interplay with hybridization and disorder are key ingredients to understand the complex phase diagrams by this family, which have been explored extensively by macroscopic techniques. Here, we present an inve...
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| Hauptverfasser: | , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
29 August 2024
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| In: |
Physical review
Year: 2024, Jahrgang: 110, Heft: 7, Pages: 1-8 |
| ISSN: | 2469-9969 |
| DOI: | 10.1103/PhysRevB.110.075161 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevB.110.075161 Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevB.110.075161 
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| Verfasserangaben: | D.S. Christovam, A. Marino, J. Falke, C.-E. Liu, C.-F. Chang, C.-Y. Kuo, O. Stockert, S. Wirth, M.W. Haverkort, G. Zwicknagl, A. Severing, P.F.S. Rosa, A.M. Caffer, M.H. Carvalho, and P.G. Pagliuso |
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| 245 | 1 | 0 | |a X-ray spectroscopic investigation of crystal fields in Ce2Rh1−IrIn8 heavy fermions |c D.S. Christovam, A. Marino, J. Falke, C.-E. Liu, C.-F. Chang, C.-Y. Kuo, O. Stockert, S. Wirth, M.W. Haverkort, G. Zwicknagl, A. Severing, P.F.S. Rosa, A.M. Caffer, M.H. Carvalho, and P.G. Pagliuso |
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| 246 | 3 | 3 | |a X-ray spectroscopic investigation of crystal fields in Ce 2 Rh 1−x Ir x In 8 heavy fermions |
| 264 | 1 | |c 29 August 2024 | |
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| 520 | |a The higher dimensionality in the crystal fields of the Ce2In8 (=Rh,Ir) compounds and its interplay with hybridization and disorder are key ingredients to understand the complex phase diagrams by this family, which have been explored extensively by macroscopic techniques. Here, we present an investigation of the crystal-electric field schemes of Ce2Rh1−IrIn8 using x-ray absorption spectroscopy. Our full multiplet calculations for the 41 configuration of Ce3+ to describe the temperature-dependent linear dichroism in Ce2In8 are consistent with a Γ17=√1−2·|∓32⟩−||·|±52⟩ ground state containing a predominant |±3/2⟩ contribution that increases further with . This enhancement is believed to favor superconductivity in Ce-based heavy fermion materials, observed in previous results in the CeIn5 family. Our recent observations shed light on the unexpected emergence of the ambient-pressure superconducting dome in the center of the composition phase diagram and its subsequent suppression on the Ir-rich side due to the early onset of fluctuations associated with the structurally more disordered state, inferred from previous neutron magnetic diffraction experiments. | ||
| 700 | 1 | |a Marino, A. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Falke, J. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Liu, C.-E. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Chang, C.-F. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Kuo, C.-Y. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Stockert, O. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Wirth, S. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Haverkort, Maurits W. |d 1976- |e VerfasserIn |0 (DE-588)130132047 |0 (DE-627)491717946 |0 (DE-576)257824006 |4 aut | |
| 700 | 1 | |a Zwicknagl, G. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Severing, A. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Rosa, P. F. S. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Caffer, A. M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Carvalho, M. H. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Pagliuso, P. G. |e VerfasserIn |4 aut | |
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