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Kagomé ice state in the dipolar spin ice Dy2Ti2O7
Y Tabata1, H Kadowaki, K Matsuhira
1Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan.
Abstract:
We have investigated the kagomé ice behavior of the dipolar spin-ice compound Dy2Ti2O7 in a 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 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 nearest-neighbor model.
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