Spin dynamics in the kagom\'{e} ice state

ORAL

Abstract

Macroscopic degeneracy of the spin ice state in the geometrically frustrated pyrochlore oxide Dy$_{2}$Ti$_{2}$O$_{7}$ is partly or fully released under magnetic fields. For field along a [111] axis, it was proposed that another macroscopic degeneracy with a finite zero- temperature entropy occurs in the frustrated kagom\'{e} layers, which are built in the pyrochlore lattice. We have investigated this kagom\'{e} ice state using single-crystalline neutron scattering experiments. Spin correlations, i.e. scattering intensity maps, will be discussed based on Monte-Calro simulations of the spin-ice model with the dipolar interatction.

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Authors

  • Naofumi Aso

    • ISSP, University of Tokyo, Japan

  • Yoshikazu Tabata

    • Osaka University, Japan

  • Hiroaki Kadowaki

    • Tokyo Metropolitan University, Japan

  • Kazuyuki Matsuhira

    • Kyushu Institute of Technology, Japan

  • Zenji Hiroi

  • Bj\"{o}rn F\aa k

    • CEA-Grenoble, France