Effect of Pressure on the Electrical Resistivity of Ce1−xErxAl2 Spin Glass

Masashi Ohashi, Masaki Nagare, Yuto Adachi, Keishiro Kobayashi, Hidenori Miyagawa, Gendo Oomi, Kenji Shirasaki

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The electrical resistivity of the single crystals of the pseudobinary alloy Ce1−xErxAl2 is measured under high pressure and low temperature. The temperature dependence of the magnetic part of the electrical resistivity, ρmag, shows a maximum (T1) and a shoulder owing to the combination of the Ruderman–Kittel–Kasuya–Yosida interaction of the localized f electron, Kondo effect, and crystalline electric field splitting of the system. As pressure increases for Ce0.8Er0.2Al2, T1 decreases and seems to be less than 2 K. Moreover, above 1.7 GPa, T1 appears again and is enhanced rapidly at a high rate of dT1=dP = 39 K=GPa. This is one of the characteristic behavior around quantum critical point, indicating that a pressure-induced quantum phase transition may exist because of the suppression of the spin-glass interaction.

Original languageEnglish
Article number074708
JournalJournal of the Physical Society of Japan
Issue number7
Publication statusPublished - 2020 Jul 15


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