Complete Elastic Constants of the Heavy Fermion YbAgGe

ORAL

Abstract

We measured the elastic constants of the heavy fermion YbAgGe using resonant ultrasound spectroscopy at temperatures from 300K to 0.5K and magnetic fields to 7T. As a function of magnetic field and below 7K, the elastic constants show strong non-monotonic behavior, suggesting a field-induced quantum critical point. Only at the lowest magnetic fields is there a strong temperature dependence.

*The work at NHMFL was carried under the auspices of the National Science Foundation, the state of Florida, and the U.S. Department of Energy.

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Authors

  • I. Mihut

  • J. Betts

  • S. Harrington

  • A. Migliori

    • LANL, Los-Alamos, NM.
    • Los Alamos National Laboratory, Materials Science and Technology (MST)-National High Magnetic Field Laboratory (NHMFL), Los Alamos, New Mexico 87545
    • Los Alamos National Laboratory
    • National High Magnetic Field Laboratory, LANL, Los Alamos, NM, 87545

  • S. L. Bud'ko

  • P. C. Canfield

    • Ames Laboratory, Iowa State University, Iowa 50011, USA