Magnetostriction of URu<sub>2-x</sub>Fe<sub>x</sub>Si<sub>2</sub> in High Magnetic Fields

ORAL

Abstract

URu2Si2 is a compound of great interest due to its hidden order (HO) phase whose order parameter has remained a mystery for more than three decades. It has been discovered that the substitution of Fe for Ru produces a transition from the HO to an antiferromagnetic (AFM), similar to what occurs under the application of pressure. This provides an opportunity to study URu2Si2 in both the HO and AFM phases at atmospheric pressure using experimental techniques that cannot readily be performed under pressure. In that vein, we conducted high field magnetostriction measurements on URu2-xFexSi2. Our results support the findings of other high field measurements on URu2-xFexSi2. However, we do not see a signature of the HO transition in our data, suggesting that our probe is not sensitive to the HO transition.

*The National High Magnetic Field Laboratory is supported by the NSF through NSF/DMR-1157490/1644779 and the State of Florida. Research at UCSD was supported by the US DOE BES under Grant No. DE-FG02-04-ER46105 (materials synthesis and characterization) and the US NSF under Grant No. DMR-1206553 (low temperature measurements) 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

    • NIST Center for Neutron Research, National Institute of Standards and Technology
    • University of Maryland, College Park
    • National Institute of Standards and Technology
    • Physics Department, University of Maryland
    • University of Maryland
    • University of Maryland, College Park & NIST
    • Department of Physics, University of Maryland, College Park
    • NIST Center for Neutron Research

  • Naveen Pouse

    • University of California, San Diego
    • physics, University of Califormia, San Diego

  • Inho Jeon

    • University of California, San Diego

  • Marcelo Jaime

    • Los Alamos Natl Lab
    • Los Alamos National Laboratory
    • NHMFL, LANL

  • M Brian Maple

    • Department of Physics, University of California, San Diego
    • UCSD
    • University of California, San Diego
    • physics, University of Califormia, San Diego
    • Departement of Physics, University fo California, San Diego
    • Physics, University of California, San Diego