Evolution of lattice coherence in the intermediate-valence heavy-fermion compound EuNi2 P2 studied by point contact spectroscopy

Masanobu Shiga, Isao Maruyama, Kengo Okimura, Takurou Harada, Takuya Takahashi, Akihiro Mitsuda, Hirofumi Wada, Yuji Inagaki, Tatsuya Kawae

研究成果: Contribution to journalArticle査読

抄録

We performed a point contact spectroscopy study in an intermediate-valence heavy-fermion (HF) compound EuNi2P2. Above the Kondo temperature TK, the differential conductance spectra show a broad peak due to the Kondo resonance at the Eu site. Below TK, the broad peak splits into two peaks that can be reproduced by the summation of two Fano curves with the same parameters, indicating the emergence of the indirect hybridization gap in an Anderson lattice. With decreasing temperature, the separation between the two peaks increases and saturates at very low temperatures. The results reveal the evolution of the electronic structure in the HF state due to the development of the lattice coherence.

本文言語英語
論文番号L041113
ジャーナルPhysical Review B
103
4
DOI
出版ステータス出版済み - 1 25 2021

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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