Magnetic fluctuations and correlations in MnSi: Evidence for a chiral skyrmion spin liquid phase

Magnetic fluctuations and correlations in MnSi: Evidence for a chiral skyrmion spin liquid phase
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MnSi 中的磁涨落和相关性:手性斯格明子自旋液相的证据

DOI:
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发表时间:
2011
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通讯作者:
B. Farago
B. Farago
中科院分区:
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文献类型:
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作者:
C. Pappas;E. Lelièvre;P. Bentley;P. Falus;P. Fouquet;B. Farago

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我们提出了一个全面的分析,涉及中子自旋回波光谱和球偏振的高分辨率中子散射数据,证实了一阶性质的螺旋过渡MnSi。实验结果表明,在TC以上的一个很窄的温度范围内,存在一个完全手性的动力学相。这种非常规的磁性短程有序具有类似于skyrmion液体或液晶蓝相的拓扑结构。
We present a comprehensive analysis of high-resolution neutron scattering data involving neutron spin echo spectroscopy and spherical polarimetry, which confirm the first-order nature of the helical transition in MnSi. The experiments reveal the existence of a totally chiral dynamic phase in a very narrow temperature range above TC. This unconventional magnetic short-range order has a topology similar to that of a skyrmion liquid or the blue phases of liquid crystals.