Existence of Heavy Fermions in the Antiferromagnetic Phase of CeIn3

Abstract

We report the pressure-dependent optical conductivity spectra of a heavy fermion (HF) compound CeIn3 below the Neel temperature of 10 K to investigate the existence of the HF state in the antiferromagnetic (AFM) phase. The peak due to the interband transition in the hybridization gap between the conduction band and nearly localized 4f states (c-f hybridization) appears at the photon energy of about 20 meV not only in the HF regime but also in the AFM regime. Both the energy and intensity of the c-f hybridization peak continuously increase with the application of pressure from the AFM to the HF regime. This result suggests that the c-f hybridization, as well as the heavy fermions, exists even in the AFM phase of CeIn3.

arXiv comment5 pages, 3 figures

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Cited by in corpus (8)

• Quantum phase transitions in heavy fermion metals and Kondo insulators
• Infrared and Terahertz Spectroscopy of Strongly Correlated Electron Systems under Extreme Conditions
• Infrared properties of heavy-fermions: evolution from weak to strong hybridizations
• Direct observation of heavy quasiparticles in the Kondo lattice CeIn3
• Optical Evidence of Itinerant-Localized Crossover of $4f$ Electrons in Cerium Compounds
• Optical spectroscopy and ultrafast pump-probe studies on the heavy fermion compound CePt${}_2$In${}_7$
• Composite Orders and Lifshitz Transition of Heavy Electrons
• Contrasting pressure evolutions of $f$ electron hybridized states in CeRhIn${}_5$ and YbNi${}_3$Ga${}_9$: an optical conductivity study