Quadrupolar Response of Kondo Compound CePd2Al3.

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  • Nemoto Yuichi
    Research Institute for Scientific Measurements, Tohoku University, Sendai 980–77
  • Goto Terutaka
    Research Institute for Scientific Measurements, Tohoku University, Sendai 980–77
  • Nakamura Shintaro
    Research Institute for Scientific Measurements, Tohoku University, Sendai 980–77
  • Kitazawa Hideaki
    National Research Institute for Metals, Tsukuba 305

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  • Quadrupolar Response of Kondo Compound
  • Quadrupolar Response of Kondo Compound CePd<sub><b>2</b></sub>Al<sub><b>3</b></sub>

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Abstract

The elastic constants of Kondo compound CePd2Al3 with a hexagonal crystal structure have been investigated by the ultrasonic measurement. In the present single crystal we have observed absence of long range order down to 0.5, K in applying field up to 120, kOe. The elastic softening of the transverse C66 mode is ascribed to the quadrupolar response for the crystalline field state of CePd2Al3. The low temperature softenings of the longitudinal C33 and C11 modes below the Kondo temperature TK-- 20, K are dominated by the Kondo singlet state.

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