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Kagomé ice state in the dipolar spin ice Dy2Ti2O7

Y. Tabata, H. Kadowaki, K. Matsuhira, Z. Hiroi, N. Aso, E. Ressouche, B. Fak

cond-mat.dis-nnarXiv:cond-mat/0607808

Abstract

We have investigated the kagomé ice behavior of the dipolar spin-ice compound Dy2Ti2O7 in magnetic field along a [111] direction using neutron scattering and Monte Carlo simulations. The spin correlations show that the kagomé ice behavior predicted for the nearest-neighbor (NN) interacting model, where the field induces dimensional reduction and spins are frustrated in each two-dimensional kagomé lattice, occurs in the dipole interacting system. The spins freeze at low temperatures within the macroscopically degenerate ground states of the NN model.

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