论文标题
洪德金属的列频谱签名
Nematic spectral signatures of the Hund's metal
论文作者
论文摘要
我们通过动态平均场理论计算表明，基于铁的超导体中列级的实验指纹与Hund相关金属状态中的电子相关性本质上连接，并且无法通过重新叠放的准胶片图片访问它们。特别是，我们的结果表明：（i）在其相关性以hund的耦合为主的金属中，列表排序并不会在光发射光谱中产生刚性的能量转移，而是更丰富的光谱重量重新分布，从而反映了实验结果； （ii）列表的特征在于由Hund物理学与实验图相一致的轨道选择性相干性。
We show, by means of dynamical mean-field theory calculations, that the experimental fingerprints of the nematic order in iron-based superconductors are intrinsically connected with the electronic correlations in the Hund's correlated metallic state and they can not be accessed via a renormalized quasiparticle picture. In particular, our results show that: (i) in a metal in which correlations are dominated by the Hund's coupling the nematic ordering does not produce a rigid energy shift in the photoemission spectra, but a much richer spectral weight redistribution which mirrors the experimental results; (ii) the nematic ordering is characterized by an orbital-selective coherence induced by the Hund's physics in agreement with the experimental picture.
