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arXiv 1005.5017cond-mat.str-el
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晶格畸变稳定CeRu2Al10中的Spin-Peierls态

Lattice Distortion to Stabilize the Spin-Peierls State in CeRu2Al10

Katsurou Hanzawa

摘要:

我们提出了一个相关的晶格畸变来稳定CeRu 2Al 10中的自旋Peierls态,这与27 Al-NQR谱和中子衍射图案相兼容,假设Al(1)到Al(4)位的Al原子在T0 = 27 K以下向其各自相邻的Ce离子移动,使Ce,Ru和Al(5)位的Al不动。由于晶格畸变,一维自旋Peierls有序在Z形链上沿c轴方向的组装变为三维有序,Q =(0,0,1),其中连接二聚Ce离子对的键形成体心结构中的反铁有序.

英文摘要:

We propose a relevant lattice distortion to stabilize the spin-Peierls state in CeRu2Al10, compatible with the 27Al-NQR spectra and the neutron diffraction patterns on the assumption that Al atoms at Al(1) to Al(4) sites displace toward their respective neighboring Ce ions below T0 = 27 K, leaving Ce, Ru, and Al at Al(5) immobile. Due to a 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 dimerized pair of Ce ions form an antiferro ordering in a body-centered structure.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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