Kagome ice state in the dipolar spin ice Dy2Ti2O7
Kagome ice state in the dipolar spin ice Dy2Ti2O7
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DOI：
10.1103/physrevlett.97.257205
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发表时间：
2006-12-22
影响因子：
8.6
通讯作者：
Fak, B.
中科院分区：
文献类型：
--
作者：
Tabata, Y.;Kadowaki, H.;Fak, B.
我们使用中子散射和蒙特卡罗模拟研究了偶极自旋冰化合物 Dy2Ti2O7 在沿 [111] 方向的磁场中的 kagome 冰行为。自旋相关性表明，为最近邻相互作用模型预测的戈薇冰行为发生在偶极相互作用系统中，其中场引起降维并且每个二维戈薇晶格中的自旋受到挫败。自旋在低温下冻结在最近邻模型的宏观简并基态中。
We have investigated the kagome 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 kagome ice behavior predicted for the nearest-neighbor interacting model, where the field induces dimensional reduction and spins are frustrated in each two-dimensional kagome lattice, occurs in the dipole interacting system. The spins freeze at low temperatures within the macroscopically degenerate ground states of the nearest-neighbor model.