Lattice Distortion for Stabilizing the Spin-Peierls State in CeRu2Al10
Lattice Distortion for Stabilizing the Spin-Peierls State in CeRu2Al10
复制标题
用于稳定 CeRu2Al10 中自旋 Peierls 态的晶格畸变
DOI：
10.1143/jpsj.79.084704
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发表时间：
2010
影响因子：
1.7
通讯作者：
K. Hanzawa
中科院分区：
文献类型：
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作者：
K. Hanzawa
我们提出了相关的晶格畸变来稳定 CeRu 2 Al 10 中的自旋 Peierls 态，与 27 Al-NQR 光谱和中子衍射图案兼容，假设 Al(1) 至 Al(4) 位点的 Al 原子在低于 T 0 = 27 K 时向各自相邻的 Ce 离子位移，而 Al(5) 位点的 Ce、Ru 和 Al 保持不动。由于所产生的规则的晶格畸变，作者预测的沿着c轴的每个Z字形链上的一维自旋-Peierls有序的组装变成了Q=(0,0,1)的三维有序，其中连接一对二聚Ce离子的键在体心结构中形成了反铁有序。
We propose a relevant lattice distortion to stabilize the spin-Peierls state in CeRu 2 Al 10 , compatible with the 27 Al-NQR spectra and neutron diffraction patterns on the assumption that Al atoms at Al(1) to Al(4) sites displace toward their respective neighboring Ce ions below T 0 = 27 K, leaving Ce, Ru, and Al at Al(5) sites immobile. Owing to the resulting regular lattice distortion, the assembly of one-dimensional spin-Peierls order on each zigzag chain along the c -axis predicted by the author becomes a three-dimensional order with Q = (0, 0, 1), where bonds connecting a dimerized pair of Ce ions form an antiferro ordering in a body-centered structure.