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Crystal electric field splitting and f-electron hybridization in heavy-fermion CePt2In7
Cent S Univ, Sch Phys & Elect, Changsha 410083, Hunan, Peoples R China..
Cent S Univ, Sch Phys & Elect, Changsha 410083, Hunan, Peoples R China..
Uppsala Univ, Dept Phys & Astron, Box 516, S-75120 Uppsala, Sweden..
Uppsala Univ, Dept Phys & Astron, Box 516, S-75120 Uppsala, Sweden..
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2019 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 100, no 8, article id 085141Article in journal (Refereed) Published
Abstract [en]

We use high-resolution angle-resolved photoemission spectroscopy to investigate the electronic structure of the antiferromagnetic heavy fermion compound CePt2In7, which is amember of the CeIn3-derived heavy fermion material family. Weak hybridization among 4f electron states and conduction bands was identified in CePt2In7 at low temperature much weaker than that in the other heavy fermion compounds like CeIrIn5 and CeRhIn5. The Ce 4f spectrum shows fine structures near the Fermi energy, reflecting the crystal electric field splitting of the 4f(5/2)(1) and 4f(7/2)(1) states. Also, we find that the Fermi surface has a strongly three-dimensional topology, in agreement with density-functional theory calculations.

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AMER PHYSICAL SOC , 2019. Vol. 100, no 8, article id 085141
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URN: urn:nbn:se:kth:diva-259442DOI: 10.1103/PhysRevB.100.085141ISI: 000482582200008OAI: oai:DiVA.org:kth-259442DiVA, id: diva2:1353387
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QC 20190923

Available from: 2019-09-23 Created: 2019-09-23 Last updated: 2019-09-23Bibliographically approved

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Tjernberg, OscarMånsson, MartinBerntsen, Magnus H.

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