2016/05/23 by R. Y. Chen, R Y Chen, N. L. Wang +1
Materials Science · Physics and Astronomy · #Biology #Charge (physics) #Condensed matter physics #Context (archaeology) #Fermion #Infrared #Iron-based superconductors research #Lattice (music) #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Range (aeronautics) #Rare-earth and actinide compounds #Scaling #Spectroscopy #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1088/0034-4885/79/6/064502
published as Reports on Progress in Physics 79, 064502 (2016) · 27 pages
openalex publication_date 2016/05/23 · arxiv created 2016/05/24 · arxiv updated 2016/05/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this article, we review the charge excitations of heavy fermion compounds probed by infrared spectroscopy. The article is not meant to be a comprehensive survey of experimental investigations. Rather it focuses on the dependence of charge excitations on the hybridization strength. In this context, the infrared properties of the Ce m M n In3m+2n family are discussed in detail since the hybridization strengths differ dramatically in different members despite their similar lattice structures. Investigations on some mixed valent compounds are also presented, aiming to elucidate the generic trend of the evolution. In particular, we address the scaling between hybridization energy gap [Formula: see text] and hybridization strength [Formula: see text]([Formula: see text]) in a wide range of heavy fermion compounds, which demonstrates that the periodic Anderson model can generally and quantitatively describe the low-energy charge excitations.