Observation of Kondo Resonance and Low-Energy Excitation in CeB6 Using Point-Contact Spectroscopy

Masanobu Shiga, Takuya Takahashi, Tsubasa Teramoto, Fumitoshi Iga, Tatsuya Kawae

研究成果: ジャーナルへの寄稿学術誌査読

抄録

We performed point-contact spectroscopy on CeB6, a heavy fermion compound, using superconducting Nb as a probe tip to achieve high-precision measurements. The differential conductance spectrum represents a sharp zero-bias conductance peak (ZBCP) below T ∼ 6 K. The temperature dependence of the spectra reveals that the ZBCP intensity increases logarithmically with decreasing temperature, owing to the evolution of Kondo resonance. A double-peak structure reflecting the indirect hybridization gap was not observed, suggesting that the development of Kondo lattice coherence is prevented by the emergence of antiferroquadrupolar and=or antiferromagnetic orderings.

本文言語英語
論文番号113705
ジャーナルjournal of the physical society of japan
91
11
DOI
出版ステータス出版済み - 11月 15 2022

!!!All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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