论文标题
在沮丧的抗fiferromagnet的动态行为中，交替的下一个最新邻居模型的证据
Evidence for the Alternating Next-Nearest Neighbor model in the dynamic behavior of a frustrated antiferromagnet
论文作者
论文摘要
X射线光子相关光谱（XPC）使我们能够研究抗铁磁体的动力学。使用一致的软X射线衍射，我们在沮丧的磁链化合物LU2COMNO6中共同探测Mn和Co Bragg峰值高于Neel温度。布拉格的峰值峰值峰值向相应的“向下向下”顺序滑动，温度降低。抗磁磁不均匀性在布拉格峰内产生斑点，其动力学是由XPC探测的，并与经典的轴向近代邻居相互作用模型进行了比较。数据支持一个新型的模型预测：随着温度的降低，动力学变得更快。
X-ray photon correlation spectroscopy (XPCS) enables us to study dynamics of antiferromagnets. Using coherent soft X-ray diffraction, we resonantly probe Mn and Co Bragg peaks in the frustrated magnetic chain compound Lu2CoMnO6 significantly below the Neel temperature. Bragg peaks of incommensurate order slide towards commensurate 'up up down down' order with decreasing temperature. Antiferromagnetic inhomogeneities produce speckle within the Bragg peaks, whose dynamics are probed by XPCS and compared to the classic Axial Next-Nearest Neighbor Interaction model of frustration. The data supports a novel model prediction: with decreasing temperature the dynamics become faster.
