Spin dynamics in the frozen state of the dipolar spin ice material Dy$_2$Ti$_2$O$_7$

ORAL

Abstract

Low temperature magnetic ac susceptibility measurements of single crystal dipolar spin ice Dy$_2$Ti$_2$O$_7$ are presented. The measured dynamics qualitatively agree with simulations based on current magnetic monopole theory, but not with thermal relaxation measurements, whose dynamics freeze out at a slower rate. The relaxation is found to exhibit thermally activated Arrhenius behavior with an activation energy of 9.79\,K. A comparison between the measurement results of Ho$_2$Ti$_2$O$_7$ and Dy$_2$Ti$_2$O$_7$ will also be made.

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Authors

  • H.M. Revell

    • University of Waterloo

  • L.R. Yaraskavitch

    • University of Waterloo

  • S. Meng

    • University of Waterloo

  • K.A. Ross

    • McMaster University

  • H.M.L. Noad

    • McMaster University

  • H.A. Dabkowska

    • Brockhouse Institute for Materials Research

  • B.D. Gaulin

    • McMaster University

  • J.B. Kycia

    • University of Waterloo