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- W4322716900 abstract "The competition between magnetic order and Kondo effect is essential for the rich physics of heavy fermion systems. Nevertheless, how such competition is manifested in the quasiparticle bands in a real periodic lattice remains elusive in spectroscopic experiments. Here we report a high-resolution photoemission study of the antiferromagnetic Kondo lattice system CeCoGe3 with a high TN1 of 21K. Our measurements reveal a weakly dispersive 4f band at the Fermi level near the Z point, arisingfrom moderate Kondo effect. The intensity of this heavy 4f band exhibits a logarithmic increase with lowering temperature and begins to deviate from this Kondo-like behavior below 25 K, just above TN1, and eventually ceases to grow below 12 K. Our work provides direct spectroscopic evidence for the competition between magnetic order and the Kondo effect in a Kondo lattice system with local-moment antiferromagnetism, indicating a distinct scenario for the microscopic coexistence and competition of these phenomena, which might be related to the real-space modulation." @default.
- W4322716900 created "2023-03-03" @default.
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- W4322716900 date "2023-02-26" @default.
- W4322716900 modified "2023-09-27" @default.
- W4322716900 title "ARPES signature of the competition between magnetic order and Kondo effect in CeCoGe3" @default.
- W4322716900 doi "https://doi.org/10.48550/arxiv.2302.13313" @default.
- W4322716900 hasPublicationYear "2023" @default.
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