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Superconductivity in the Ferroquadrupolar State in the Quadrupolar Kondo Lattice PrTi$ 2$Al$ {20}$ by Sakai, Akito; Kuga, Kentaro; Nakatsuji, Satoru is a scholarly article available to read on EtoBox.

What is Superconductivity in the Ferroquadrupolar State in the Quadrupolar Kondo Lattice PrTi$ 2$Al$ {20}$ about?

The cubic compound PrTi$_2$Al$_{20}$ is a quadrupolar Kondo lattice system that exhibits quadrupolar ordering due to the non-Kramers $\Gamma_3$ ground doublet and has strong hybridization between $4f$ and conduction electrons. Our study using high-purity single crystal reveals that PrTi$_2$Al$_{20}$ exhibits type-II superconductivity at $T_{\rm c} = 200$ mK in the nonmagnetic ferroquadrupolar state. The superconducting critical temperature and field phase diagram suggests moderately enhanced effective mass of $m^*/m_0 \sim 16$.

Author

Sakai, Akito; Kuga, Kentaro; Nakatsuji, Satoru

Published

2012

Language

EN