Shubnikov de Haas oscillation measurements on Pr<i>T</i><sub>2</sub>Cd<sub>20</sub> (<i>T</i> = Ni, Pd) “cage” compounds

ORAL

Abstract

Our group discovered a variation of the RT2X20 (R is a rare earth element, T a transition metal) “1-2-20” compounds with X = Cd. These “cage” compounds contain atomic cages within which R and T ions are located. The localized f- electron states of the R ions hybridize with the ligand states of the surrounding cage ions and generate correlated electron behavior. Pr-based “1-2-20” compounds with a Pr3+ non-Kramers doublet ground state in the crystalline electric field have been reported to exhibit quadrupolar Kondo phenomena, multipolar ordering, heavy fermion behavior, etc. In order to study the Fermi surface of PrT2Cd20 (T = Ni, Pd) compounds, we measured Shubnikov de Haas oscillations using the Proximity Detector Oscillator method for H up to 60 T at T = 1.5 K on single crystals.

*The NHMFL is supported by the NSF through NSF/DMR-1157490/1644779 and the State of Florida. Research at Kobe University was funded by JP15K21732. Research at UCSD was supported by the US DOE BES under Grant No. DE-FG02-04-ER46105, the USNSF under Grant No. DMR-1206553, and the NNSA under the SSAA program through the US DOE under Grant No. DE-NA0002909. This research is also funded by a QuantEmX grant from ICAM and the Gordon and Betty Moore Foundation through Grant GBMF5305 to Alexander Breindel

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Presenters

  • Alexander Breindel

    • University of California, San Diego

Authors

  • Alexander Breindel

    • University of California, San Diego

  • Sheng Ran

    • National Institute of Standards and Technology
    • NIST Center for Neutron Research, National Institute of Standards and Technology, University of Maryland, College Park
    • Quantum Materials Center, Department of Physics, University of Maryland College Park
    • Physics, Washington University in St. Louis
    • Maryland Quantum Materials Center and Department of Physics, University of Maryland, College Park
    • Department of Physics and Astronomy, University of Maryland, College Park
    • Washington University
    • Physics Department, Washington University in St. Louis
    • NIST Center for Neutron Research, National Institute of Standards and Technology
    • Washington University in St. Louis
    • Department of Physics, University of California, San Diego
    • University of Maryland, College Park

  • Fedor F Balakirev

    • Los Alamos National Laboratory
    • National High Magnetic Field Laboratory, Los Alamos National Laboratory

  • John Singleton

    • National High Magnetic Field Laboratory, Los Alamos National Laboratory
    • Los Alamos National Lab
    • Los Alamos National Laboratory
    • LANL, NHMFL
    • National High Magnetic Field Laboratory (NHMFL), Los Alamos

  • Hisatomo Harima

    • Kobe University

  • M Brian Maple

    • Department of Physics, University of California, San Diego
    • University of California, San Diego
    • Physics, Univ. of California, San Diego