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首页> 外文期刊>The European physical journal, B. Condensed matter physics >On the ground-state magnetic structure in Er2Ni2Pb
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On the ground-state magnetic structure in Er2Ni2Pb

机译：关于Er2Ni2Pb中的基态磁性结构

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摘要

We have studied the unusual low-temperature magnetic phase of Er2Ni2Pb using powder neutron diffraction measurements in zero field down to 460 mK. Our previous neutron diffraction experiments down to 1.5 K showed that magnetic Bragg reflections seen in Er2Ni2Pb can be indexed by several propagation vectors that partially coexist. All the incommensurate propagation vectors seemed to disappear in the low temperature limit. The present study, however, shows that reflections belonging to the propagation vector q = (0.47 0 1/2) do not disappear but remain present down to 460 mK. This highly unexpected result suggests that the magnetic structure described by this propagation vector might not be a simple sine-wave modulation. One interesting possibility here is a spin-slip structure as the ground state.
机译：我们使用粉末中子衍射测量在低至460 mK的零场中研究了Er2Ni2Pb的异常低温磁相。我们之前的低至1.5 K的中子衍射实验表明，在Er2Ni2Pb中看到的磁布拉格反射可以通过部分共存的多个传播矢量来索引。所有不相称的传播向量似乎都在低温极限下消失了。但是，本研究表明，属于传播矢量q =（0.47 0 1/2）的反射不会消失，而在460 mK的范围内仍然存在。这个非常出乎意料的结果表明，由该传播矢量描述的磁性结构可能不是简单的正弦波调制。一种有趣的可能性是自旋滑移结构作为基态。

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