1. Pressure effects on Ce-based Kondo approximant crystal.
- Author
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Sawano, Takuya, Shinagawa, Yuta, Shiino, Takayuki, Imura, Keiichiro, Deguchi, Kazuhiko, and Sato, Noriaki K.
- Subjects
KONDO effect ,CERIUM alloys ,QUASICRYSTALS - Abstract
The Ag–In–Ce alloy is an approximant crystal to a Tsai-type quasicrystal and exhibits heavy-fermion (Kondo) physics. This new type of Kondo material exhibits spin-glass ordering below the freezing temperature T
f ∼ 0.3 K at ambient pressure. Here we investigated the effect of hydrostatic pressure on the Ag–In–Ce alloy. Spin-glass features, such as the frequency-dependent cusp near Tf in the ac magnetic susceptibility curve, were observed even under external pressure. In addition, the C/T value (where C is the specific heat) increased with decreasing temperature and exhibited a broad peak above Tf . The Tf increased as the pressure increased up to its highest value in the experiment (approximately 2.6 GPa). [ABSTRACT FROM AUTHOR]- Published
- 2018
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