Superconductivity in the Ferroquadrupolar State in the Quadrupolar Kondo Lattice PrTi2Al20

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概要

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• The cubic compound PrTi2Al20 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 crystals reveals that PrTi2Al20 exhibits type-II superconductivity at T_{\text{c}} = 200 mK in the nonmagnetic ferroquadrupolar state. The superconducting critical temperature and field phase diagram indicates clean limit superconductivity with moderately enhanced effective mass of m^{*}/m_{0} \sim 16.

• 2012-08-15

著者

• Nakatsuji Satoru

  Institute for Solid State Physics (ISSP), University of Tokyo, Kashiwa, Chiba 277-8581

• Nakatsuji Satoru

  Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan

• SAKAI Akito

  Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan

• KUGA Kentaro

  Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan

関連論文

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• Kondo Effects and Multipolar Order in the Cubic PrTr2Al20 (\textit{Tr}=\text{Ti}, V)
• Superconductivity in the Ferroquadrupolar State in the Quadrupolar Kondo Lattice PrTi2Al20
• \muSR Evidence of Nonmagnetic Order and 141Pr Hyperfine-Enhanced Nuclear Magnetism in the Cubic \Gamma_{3} Ground Doublet System PrTi2Al20
• Pressure Dependence of Electrical Transport in the Triangular Antiferromagnetic Insulators FeGa2S4 and Fe2Ga2S5
• Possible Multiple Gap Superconductivity with Line Nodes in Heavily Hole-Doped Superconductor KFe2As2 Studied by 75As Nuclear Quadrupole Resonance and Specific Heat
• Evidence of a High-Field Phase in PrV
• High-Field ESR and Magnetization of the Triangular Lattice Antiferromagnet NiGa2S4

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