NMR Study of Line Shape Effects Caused by the Hidden Order in a Random Powder of URu$_2$Si$_2$

ORAL

Abstract

We present NMR data for an epoxy-potted random-powder sample of URu$_2$Si$_2$. We have followed the line shape from 280 K down to about 4 K and observed its changing features as functions of temperature and two values of the applied magnetic field strength (1 and 2 T). We will describe the effects of the hidden order (transition temperature $T_0 \sim 17.5$~K) on the line shape and compare them with previous results in c-axis oriented samples and single crystals.

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Authors

  • S. Jung

    Physics and Astronomy Department California State University, Los Angeles, CA 90032

  • O. O. Bernal

    Physics and Astronomy Department California State University, Los Angeles, CA 90032

  • D.E. MacLaughlin

    Physics and Astronomy Department, University of California, Riverside, CA 92521, U. Calif., Riverside

  • T. J. Gortenmulder

    Kamerlingh Onnes Lab, 2300 RA, Leiden, The Netherlands

  • J. A. Mydosh

    Institute of Physics 2, University of Cologne, Zuelpicher Str. 77, 50937 Koeln, Germany