ARPES signature of the competition between magnetic order and Kondo effect in CeCoGe3

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.

arXiv comment7 pages, 4 figures

References in corpus (29)

• Wannier90: A Tool for Obtaining Maximally-Localised Wannier Functions
• Fermi-liquid instabilities at magnetic quantum phase transitions
• Quantum Criticality in Heavy Fermion Metals
• Locally critical quantum phase transitions in strongly correlated metals
• Superconductivty without inversion symmetry: MnSi versus CePt_3Si
• The break up of heavy electrons at a quantum critical point
• How do Fermi liquids get heavy and die?
• Hidden Magnetism and Quantum Criticality in the Heavy Fermion Superconductor CeRhIn5
• Fermi-surface collapse and dynamical scaling near a quantum critical point
• Heavy-electron quantum criticality and single-particle spectroscopy
• Direct observation of how the heavy fermion state develops in CeCoIn5
• A Tunable Two-impurity Kondo system in an atomic point contact
• Temperature dependence of the Kondo resonance and its satellites in CeCu_2Si_2
• High Resolution Photoemission Study on Low-T_K Ce Systems: Kondo Resonance, Crystal Field Structures, and their Temperature Dependence
• Interplay between Kondo effect and Ruderman-Kittel-Kasuya-Yosida interaction
• Evolution of the Kondo lattice electronic structure above the transport coherence temperature
• Emergent states in heavy electron materials
• Band dependent inter-layer $f$-electron hybridization in CeRhIn${}_5$
• Neutron scattering and muon spin relaxation measurements of the non-centrosymmetric antiferromagnet CeCoGe3
• The Kondo Resonance in Electron Spectroscopy
• Anisotropic c-f hybridization in the ferromagnetic quantum critical metal CeRh${}_6$Ge${}_4$
• Orbital-selective Kondo entanglement and antiferromagnetic order in USb${}_2$
• Structure and transport in multi-orbital Kondo systems
• Revealing the Heavy Quasiparticles in the Heavy-Fermion Superconductor CeCu2Si2
• Kondo Destruction in RKKY-Coupled Kondo Lattice and Multi-Impurity Systems
• Evidence for a hybridization gap in noncentrosymmetric CeRuSi3
• Angle-resolved photoemission spectroscopy study of crystal electric field in heavy fermion compound CePt2In7
• Relaxing Kondo screened Kramers-doublets in CeRhSi${}_3$
• Renormalized quasiparticles, topological monopoles and superconducting line nodes in heavy fermion CeTX${}_3$ compounds

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• Magnon Damping as a Probe of Kondo Coupling in Magnetically Ordered Systems
• Measurements of electronic band structure in CeCoGe${}_3$ by angle-resolved photoemission spectroscopy
• Flat Topological Nodal Lines in Heavy-Fermion Compound CeCoGe${}_3$