Kagomé ice state in the dipolar spin ice Dy2Ti2O7.
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.
Tabata
Y
Y
Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan.
Kadowaki
H
H
Matsuhira
K
K
Hiroi
Z
Z
Aso
N
N
Ressouche
E
E
Fåk
B
B