Low-Temperature Properties of the Dense Kondo System Ce0.5La0.5B6.

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  • Nakamura Shintaro
    Graduate School of Science and Technology, Niigata University, Niigata 950–21
  • Suzuki Osamu
    Graduate School of Science and Technology, Niigata University, Niigata 950–21
  • Goto Terutaka
    Graduate School of Science and Technology, Niigata University, Niigata 950–21
  • Sakatsume Shinichi
    Center for Law Temperature Science, Tohoku University, Sendai 980–77
  • Matsumura Takeshi
    Department of Physics, Tohoku University, Sendai 980–77
  • Kunii Satoru
    Department of Physics, Tohoku University, Sendai 980–77

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  • Low-Temperature Properties of the Dense
  • Low-Temperature Properties of the Dense Kondo System Ce<sub><b>0.5</b></sub>La<sub><b>0.5</b></sub>B<sub><b>6</b></sub>

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Abstract

Low-temperature specific heat and electric resistivity of the dense Kondo compound Ce0.5La0.5B6 have been measured. The specific heat for H=0 shows a broad peak at around 0.9, K corresponding to the Kondo effect. No indication of magnetic or quadrupolar phase transition is observed down to 100, mK for H=0. Very large specific heat coefficients of γ =1.8, J/K2, mol and β =2.9, J/K4, mol for H=0 indicate the Kondo singlet ground state without long-range ordering.

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