论文标题
从RIXS测量获得的FESE的列中列相的自旋兴奋性各向异性理论
Theory of spin-excitation anisotropy in the nematic phase of FeSe obtained from RIXS measurements
论文作者
论文摘要
最近的共振非弹性X射线散射（RIX）实验已经在基于神秘的铁基超导体FESE的夜代中检测到了明显的高能自旋兴奋性各向异性，其起源仍然有争议。我们应用了先前用于描述通过中子散射测量结果测量的自旋兴奋各向异性的巡回模型，其中RPA近似中包含磁波动。计算出的RIX横截面与RIX数据（包括高能自旋兴奋性各向异性）表现出总体一致。
Recent resonant inelastic x-ray scattering (RIXS) experiments have detected a significant high-energy spin-excitation anisotropy in the nematic phase of the enigmatic iron-based superconductor FeSe, whose origin remains controversial. We apply an itinerant model previously used to describe the spin-excitation anisotropy as measured by neutron scattering measurements, with magnetic fluctuations included within the RPA approximation. The calculated RIXS cross section exhibits overall agreement with the RIXS data, including the high energy spin-excitation anisotropy.
