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首页> 外文期刊>International Journal of Modern Physics, B. Condensed Matter Physics, Statistical Physics, Applied Physics >Inelastic neutron scattering signal from deconfined spinons in a fractionalized antiferromagnet
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Inelastic neutron scattering signal from deconfined spinons in a fractionalized antiferromagnet

机译：分级反铁磁体中受限约束的棘突的非弹性中子散射信号

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摘要

We calculate the contribution of deconfined spinons to inelastic neutron scattering (INS) in the fractionalized antiferromagnet (AF*), introduced elsewhere. We find that the presence of free spin-1/2 charge-less excitations leads to a continuum INS signal above the Neel gap. This signal is found above and in addition to the usual spin-1 magnon signal, which to lowest order is the same as in the more conventional confined antiferromagnet. We calculate the relative weights of these two signals and find that the spinons contribute to the longitudinal response, where the magnon signal is absent to lowest order. Possible higher-order effects of interactions between magnons and spinons in the AF* phase are also discussed. [References: 21]
机译：我们计算了在其他地方引入的分级反铁磁体（AF *）中受限约束的棘突对非弹性中子散射（INS）的贡献。我们发现自由自旋1/2无电荷激发的存在会导致Neel间隙以上的连续INS信号。除了通常的自旋1磁振子信号之外，还可以找到该信号，最低自旋信号与更常规的受限反铁磁体中的信号相同。我们计算了这两个信号的相对权重，发现在纵向响应中，自旋子对纵向响应有贡献。还讨论了AF *阶段中，磁振子和自旋子之间相互作用的可能的更高阶效应。 [参考：21]

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